"Baptism with water is the sign and seal of baptism with the Spirit, as much as it is of the forgiveness of sins. Water-baptism is the initiatory Christian rite, because Spirit-baptism is the initiatory Christian experience."

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Moreover, from the time when He said, 'Except a man be born of water and of the Spirit, he cannot enter into the kingdom of heaven;' and again, 'He that loseth his life for my sake shall find it; ' no one becomes a member of Christ except it be either by baptism in Christ, or death for Christ.

— Saint Augustine