How about a blessing? As a parent, a blessing is yours to give your child, after all…
perhaps something along the lines of “may the grace of God fill your life with blessings and your character with virtues” or some such thing…
or maybe, “may the hand of our Lord always hold your heart in love, your hand in friendship, your feet in faith, forever and ever”
or maybe, “may your life be that of a Saint’s, may your faith be your strength, may our God forever be your shelter”
or countless other options… fill it with love, meaning, direction…
and remember that God hears and understands, the child hears and may one day understand, and you and your spouse hear and understand.
above all, do what you think best. Congratulations on becoming parents to one of God’s precious little ones

.
love
Saoirse