Baptize means to immerse in, or wash with something, usually water. Baptism in the Holy Spirit, fire, the Body of Christ, and suffering are also mentioned in the New Testament, along with baptism in water. Baptism is not just to cleanse the body, but as an outward sign of an inward spiritual cleansing and commitment. Baptism is a sign of repentance, as practiced by John the Baptizer, and of faith in Jesus Christ, as practiced by Jesus' disciples.