Baptism, nowadays, is given almost exclusively to children. Original sin, inherited from Adam, is forgiven when the infant is baptized . Baptism is a burial. Baptism is a planting. Baptism is a resurrection.
Baptism is a washing.
Baptism is a birth of water. There is only one baptism. Believers who have repented of their sins and confessed faith in Christ are Biblically qualified to be baptized. All Christians are called saints. Christening not in Bible, nor godfather or godmother.