The "going up" into Heaven of the Risen Christ forty days after his Resurrection. Jesus told his disciples to baptise everyone in the name of the Father, the Son and the Holy Spirit just before he ascended to heaven.
Initiation of babies and young children into the Church, where promises are taken on their behalf by adults. The infant is washed in water which frees them from original sin and symbolises a spiritual rebirth. Catholic and Anglican churches use a font and pour water over the baby's head three times. Orthodox Christians fully immerse the naked baby in the font.
Initiation into the Church, by immersion in water, of people old enough to understand the ceremony/rite and willing to live a Christian life. Some denominations prefer this to infant baptism. This form of baptism contains many similarities to the baptism of Jesus. Baptist and Pentecostal Churches only use this Baptism.
Said during a Believers' Baptism, stating they are truly sorry for sin. They state their faith in Christ as their personal Saviour and their intention to show lifelong dedication to the service of Christ.