“What is baby dedication? Is child / baby dedication biblical?”……In the majority of Protestant denominations that practice it, child dedication is a symbolic ceremony undertaken by Christian parents soon after the birth of a child. Some churches perform these ceremonies en masse and have several couples and children participating at the same time. The rite is intended to be a public statement by the parents that they will train their children in the Christian faith and seek to instill that faith in them. The congregation often responds through responsive reading or some other method to affirm that they, as a church family, will also seek to encourage the parents to bring up the child in the faith. There is no implied salvation in the ceremony and it varies from church to church.……The idea of dedicating a child to the Lord can certainly be found in the Bible. Hannah was a barren wife who promised to dedicate her child to God if He would give her a son

1 Samuel 1:11

And she made this vow: "O Lord of Heaven's Armies, if you will look upon my sorrow and answer my prayer and give me a son, then I will give him back to you. He will be yours for his entire lifetime, and as a sign that he has been dedicated to the Lord, his hair will never be cut.(Some manuscripts add He will drink neither wine nor intoxicants. )…Mary and Joseph took Jesus to the temple after eight days in order to dedicate Him to the Lord.

Luke 2:21-23…Eight days later, when the baby was circumcised, he was named Jesus, the name given him by the angel even before he was conceived. Then it was time for their purification offering, as required by the law of Moses after the birth of a child; so his parents took him to Jerusalem to present him to the Lord.The law of the Lord says, "If a woman's first child is a boy, he must be dedicated to the Lord."(Exod 13:2)

This was slightly more involved since it involved circumcision, but once again this ceremony did not indicate any level of salvation. It was establishing a future reminder for these children that there was a God who had set Israel apart and deserved to be served.……Child / baby dedication is not one of the two sacraments-baptism and the Lord's Supper-required of Christians in the New Testament. A sacrament may be defined as "the outward symbol of inward grace." As Christians, we are baptized and participate in the Lord's Supper as outward and public signs of what Christ has done within us. While baby dedication is not an officially instituted sacrament of the church, there does not seem to be any conflict with Scripture as long as parents do not view it as assuring the salvation of the child.