First, decide who is going to read it
Children make their First Communion at what the Church calls the age of reason, usually around seven, in second grade in the US, after months of classes and a First Reconciliation before it. So your reader has been preparing all year, can read print confidently, may still struggle with joined-up writing, and has strong opinions about which part of the day mattered. In my experience the part that mattered is rarely the part adults write about. Adults write about the sacrament. Children talk about walking up in front of everyone and not tripping.
I learned this the unglamorous way. In May 2023 I sent a card from Ennis to the daughter of a friend of mine, Cecily, and filled it with three careful paragraphs, including the word covenant, which I thought sounded warm. Cecily texted me a photograph that evening of her daughter reading it aloud at the table, stuck on covenant, asking whether it was a promise you were not allowed to break even if you crossed your fingers. The twenty euro note had already been rescued and spent in her head on sweets. She never did get to my second paragraph. The card she kept from that day, Cecily said, was her granny's, and it was two lines long.
So the working rules are plain. Print, do not write in cursive, if the child is at the younger end. Keep sentences short enough to be read aloud in one breath. Put the child's name and the date inside the card, because these cards get kept for decades and an undated one becomes anonymous surprisingly fast. If you want a Bible verse, pick one and copy it exactly; the one that belongs to this day is John 6:35, 'I am the bread of life,' and one verse chosen well beats three verses pasted in to look thorough. And if there is something you want to say to the parents, about their year of classes and costumes and rehearsals, say it to them directly, in a text or a separate short note. Do not park it in the child's card, where it reads as a letter she has been asked to deliver.
To the child, in words a seven-year-old can read
Direct, short, and about what she or he actually did. Name the preparation, the walking up, the not tripping, the party afterwards. Pride lands better than blessings at this age, because pride is about them and blessings can sound like they are about the day.
- Happy First Communion day. You practised for months, you learned your prayers, and today you walked up in front of everyone and did it. I am so proud of you.
- You did the hard part yourself today. Nobody could do it for you, and you were not even nervous. Well, maybe a tiny bit. Well done.
- Happy First Communion. I hope today feels as special as you looked walking up the aisle, and I hope there is cake later. There had better be cake.
- I am the bread of life (John 6:35). Today you received Him for the first time, and I am so glad I was there to see it.
- You have been telling me about this day since Christmas. It finally came, and you were ready. Congratulations, superstar.
- God bless you on your First Communion day. I will remember you walking up so carefully, holding your hands just right, for a long time.
- Well done on your big day. You remembered everything, you sang the songs, and you smiled the whole way back to your seat.
- Happy First Communion to my favourite second-grader. Today you joined everybody else at the table, and the table is better for it.
From the parents, for the card she keeps
Some parishes build this in. Families are asked to write the child a letter during the preparation year, sometimes handed over at a retreat, sometimes at the breakfast table that morning. Either way, a parent's card is the one that gets reread at eighteen and at thirty, so write the version of today you want her to have when your memory of it has softened. Name one thing she did while preparing, not a summary of her character.
- All year you asked questions we had to look up. Today you walked up with your hands folded and your mind made up. We have never been prouder of you.
- We watched you practise receiving on your tongue with a crisp, so you would not be worried on the day. You were not worried. You were ready before we were.
- Today you received Jesus for the first time, and your whole family was in one place watching. That does not happen often. Remember that part too.
- You were nervous last night and asleep by nine anyway. This morning you were first dressed and waiting by the door. That is exactly who you are.
- We kept your candle, your booklet and now this card together. One day they will explain today better than photographs do. We love you. Today most of all, somehow.
- Your grandmother received her First Communion in this same church, in a dress her mother sewed. Today it was you. Some threads in a family are quiet ones.
From grandparents, aunts, uncles and close family
Family cards carry the history, so use it. A grandparent who remembers the mother's or father's own First Communion can say in two lines what nobody else in the room can say at all. That comparison is the good kind. The other kind, measured against a brother or sister, is in the leave-out section below.
- Your dad made his First Communion in this church too, and he fidgeted through the whole Mass. You sat stiller than he ever did. We are proud of you both.
- Happy First Communion, love. I have a photograph of myself at your age in a white dress I thought was a wedding dress. Today you understood your day better than I understood mine.
- You are the fourth generation of this family to receive at that altar. Your great-granny would have had plenty to say, and most of it would have been praise.
- Well done today. You have been counting down since your First Reconciliation, and the day was worth the counting. All my love, today and every ordinary day after it.
- I could not be there, so I sat in the front room at ten o'clock and thought about you walking up. Distance is a poor excuse and I am using it anyway. I am so proud.
- Happy First Communion. The party is at ours, the good plates are out, and your name is on the cake in icing I did not do myself, for everyone's safety.
- God bless you today. You take after your mother in most ways, including doing the frightening thing first and mentioning you were frightened afterwards.
- To a wonderful grandson on his First Communion day. You shook the priest's hand afterwards like a small mayor. Never lose that.
From a godparent, whose job here is smaller than you think
People search for the godparent's special duties at a First Communion, and the honest answer, at least in the US, is that there are none. No sponsor is required for this sacrament and godparents have no formal part in the day. Your role is the one you got at the baptism: continuity. You are the adult who was there at the font and is still showing up at the table seven years later. Write that, and skip any line that performs a spiritual office you do not hold.
- I stood at the font when you were baptised, in a suit that no longer fits, and I stood at the back today and watched you walk up on your own. Same promise, kept.
- Happy First Communion to my goddaughter. My job was never to have answers. It is to keep turning up, and today was an easy one to turn up for.
- You asked me last week what a godparent actually does. Mostly this. I was there at the start, I am here today, and I plan to be embarrassingly present for the rest.
- God bless you today. When you were baptised you slept through the important part. Today you were wide awake for all of it, and so was I.
- I am proud of the preparation you did, the questions you asked, and the way you looked after the younger ones in your class who were scared. That is the faith part, as far as I can tell.
- Seven years I have been your godfather and today was the first time you corrected my singing in church. Fair enough. It needed correcting. Happy First Communion.
If you are not Catholic, and possibly not religious at all
This is the bank most people came here for, and the one the other sites write worst, because they hand you blessings to copy whether or not you believe them. A family that invited you knows what you believe. They invited you anyway, which tells you the invitation was about your presence, not your theology. So write what is true: that you were glad to be there, that the child did well, that you are proud of her. You can wish a child well on a religious day without borrowing a faith, the same way you can sing at a wedding without being married. One warning from experience: do not explain the sacrament back to the family. They know. A guest's summary of the Eucharist in a card is the one version of this article's advice with no exceptions.
- Happy First Communion. I do not share your faith, but I know a big day when I see one, and I watched you handle yours beautifully. I am proud to have been there.
- Congratulations on today. Your mum told me how hard you prepared, and it showed. Thank you for having me at your celebration. I would not have missed it.
- I sat near the back and understood about half of the Mass, and all of the important part, which was you, walking up like you meant it. Well done.
- God bless you is your family's language more than mine, so I will say it in mine: I hope today is the start of every good thing they hope for you. I think it might be.
- Thank you for inviting someone from outside the faith to a day that matters this much to your family. I felt trusted. Congratulations to a very composed young person.
- Well done today. I learned a lot, I sang when everyone else sang, and I was moved by how seriously you took it all. That is a compliment at any age.
- Happy First Communion day. Whatever you grow up to believe, I hope you keep the quality you showed today, which was doing a difficult thing carefully, in public, at seven.
For an older child, a teenager, or an adult receiving for the first time
Not every first communicant is seven. Older children join preparation classes built for second-graders and sit through them anyway, teenagers receive alongside a confirmation group, and adults come through a year of instruction of their own. Every competitor writes only to the little ones, so an adult first communicant gets offered cards about being a special boy or girl. Write to the decision instead. An adult who receives for the first time has thought longer and harder about it than anyone else in the building that day.
- Congratulations on your First Communion. A year of classes, questions and Thursday evenings went into today, and nobody watching would have guessed it was your first time.
- You came to this slowly and on purpose, which is rarer than coming to it at seven because everyone else did. I respect the route as much as the arrival. Welcome to the table.
- Happy First Communion. I know today was not the beginning of your believing, just the day it became visible. I was honoured to be in the room for it.
- Your class of seven-year-olds has no idea how much work you did to stand in that line with them. I do. Well done, and I mean the unglamorous kind of well done.
- Today you received for the first time, after years of sitting in the pew while everyone else went up. That wait is part of the story now, and it ended well.
Short lines for a group card, a gift tag, or a class card
When the card comes from a whole class, a team of parents on a group chat, or thirty relatives who each get one line, brevity is not a compromise, it is the format. One line, signed, beats a paragraph that five other people then feel they have to match.
- Happy First Communion. You did it, and we all saw you do it. From all of us in your class.
- Well done today. Proud is the whole message. The rest is cake.
- Congratulations on your First Communion, from the family chat, where you are currently famous.
- Today you joined the line that your parents and grandparents stood in. Welcome to it.
- Happy First Communion day. One line is all the space I get, so here is the truest one: you were wonderful.
- To the bravest second-grader we know. Today was yours.
- You prepared, you prayed, you walked up, you smiled. That is the whole day in one line, and it was a good one.
Money in the card, and the lines to leave out
Money is normal at a First Communion and nobody should pretend otherwise, but the amounts quoted online swing wildly because they mix countries and closeness. As a rough shape from US etiquette guidance: a guest or neighbour gives in the region of twenty to fifty dollars, close family and godparents give more, and figures up to two hundred appear for grandparents, which is a ceiling some families reach, not a standard anyone is owed. Irish guidance runs lower and in euros, around twenty to thirty for a friend's child and fifty for a niece, nephew or godchild. Treat all of it as weather, not law. The two reliable moves are to ask someone in the family what is usual in their circle, and to give what you can afford without resentment, because a seven-year-old cannot read a banknote's denomination as a measure of love and the parents will not either. Put the money in the card, not in a separate envelope that can part company with it in a pile of wrapping paper, and never write the amount in the message. The message is the part that gets kept.
Lines to leave out, quoted so you can recognise them:
'Now you are a real Catholic.' 'You looked like a little bride.' 'Do not spend it all on sweets, ha ha.' 'Your brother never made a fuss like this.' 'I have bought you something much better than money.' 'May you always stay as pure as you are today.'
Each one fails a specific way. The first tells a child her belonging was incomplete until today. The second reviews her appearance instead of her achievement, and the bride comparison makes most parents wince. The sweets joke instructs a child about money she has not opened yet. The sibling line turns a sacrament into a league table. The gift boast makes the card an advertisement. And the purity line hands a seven-year-old a standard she can only fall from. Wine jokes belong on the same shelf, by the way. She received a sip, possibly none, and the joke is never as original as the room thinks it is.
Turn it into a group card
First Communions collect people who rarely sign anything together: the class parents, the godparents in another state, cousins who only meet at sacraments and funerals. A paper card at the party reaches whoever is in the kitchen. A group card everyone can sign reaches the rest, and each person writes in their own register, which matters on a day when half the signers share the faith and half are guests at it. You can create a card online in a couple of minutes and send the link out with the party invitation, so the lines arrive before the day rather than being chased after it.
For the neighbouring milestone, the shipped bar and bat mitzvah messages show how a family handles the same problem at thirteen, with a reader old enough for irony. And if you are the parent now facing a desk of thank-you cards, the graduation card guide is the closest cousin in register for writing to a young person at a ceremony, formal on the surface and personal underneath.
Cecily lent me her bicycle that weekend in Ennis because the church was a mile out of town and her car was full of trifle. The bell on it had come loose and rang by itself on every uneven stretch, so I arrived at my first ever First Communion announced, repeatedly, like a small parade of one. She says she has tightened it since. She has not. Last spring she rode past my house on it and I heard her coming from the corner, and neither of us mentioned the bell at all.