When it is said
The priest says it over the baby on the 40th day after the birth, making the sign of the cross over the child.
If the baby has already been baptized, the priest changes the words about Baptism to fit.
Where it comes from
No author known
Where it comes from
It is the prayer over the baby among the prayers for the 40th day after a birth in the Book of Needs, the priest’s book of services for life’s big moments. No writer is named. It is already in the Greek edition that Jacques Goar printed in Paris in 1647.
Jesus at 40 days old
The prayer begins with the day Mary and Joseph brought the infant Jesus to the Temple in Jerusalem, as the Law of Moses required. There an old man named Simeon took Him in his arms and blessed God (Luke 2:22-28). The Church keeps the same 40th day for baby girls and boys alike.
Metropolitan Saba (Isper), Service of Entering the Newborn into the Church after Forty Days
The Scripture in it
And when the time of purification according to the Law of Moses was complete, His parents brought Him to Jerusalem to present Him to the Lord (as it is written in the Law of the Lord: “Every firstborn male shall be consecrated to the Lord”), and to offer the sacrifice specified in the Law of the Lord: “A pair of turtledoves or two young pigeons.” Now there was a man in Jerusalem named Simeon, who was righteous and devout. He was waiting for the consolation of Israel, and the Holy Spirit was upon him. The Holy Spirit had revealed to him that he would not see death before he had seen the Lord’s Christ. Led by the Spirit, he went into the temple courts. And when the parents brought in the child Jesus to do for Him what was customary under the Law, Simeon took Him in his arms and blessed God, saying …
Bible text: Berean Standard Bible, public domain.
In Church Slavonic
Господи Боже наш, в четыредесятный день Младенец законному храму принесенный
от Марии неискусобрачныя и святыя Твоея Матере,
и на объятиях праведнаго Симеона носимый,
Сам Владыко Всесильне, и принесеннаго сего младенца,
явитися Тебе, всех Творцу, благослови
и на всякое дело благое, и Тебе благоугодное возрасти,
отгоняя от него всякую сопротивную силу знамением воображения Креста Твоего.
Ты бо еси храняй младенцы, Господи,
да сподобився святаго Крещения, получит часть избранных Царствия Твоего,
соблюдаемь с нами благодатию святыя и единосущныя, и нераздельныя Троицы:
Тебе бо подобает всякая слава, благодарение и поклонение
со безначальным Твоим Отцем, и пресвятым, и благим, и животворящим Твоим Духом,
ныне и присно, и во веки веков, аминь.
From the Slavonic Book of Needs (Trebnik), Prayer 2, over the child, on Azbyka.ru.