Baptism: Administered by Immersing the Whole Body of the Person In
Source: TTT
Matthew 3:16
As soon as Jesus was baptized, He went up out of the water. Suddenly the heavens were opened, and He saw the Spirit of God descending like a dove and resting on Him.
Acts 8:38, 39
And he gave orders to stop the chariot. Then both Philip and the eunuch went down into the water, and Philip baptized him. / When they came up out of the water, the Spirit of the Lord carried Philip away, and the eunuch saw him no more, but went on his way rejoicing.