Baptism with water, or with spirit already says all, it isn´t sinked. Baptism with the spirit, needs someone to baptize, yet the baptism in spirit, wouldn´t need anyone.
And is here where those of the Trinity try to deny Christ, the Son who came baptizing, with the Holy Spirit of the Father.
John Baptist gave two clear testimonies. In only this couple of texts undoes this fake doctrine, of immersion and the Trinity.
In John 1.32 to 34:
32- And John bare record, saying, I saw the Spirit descending from heaven like a dove, and it abode upon him.
33- And I knew him not: but he that sent me to baptize with water, the same said unto me, Upon whom thou shalt see the Spirit descending, and remaining on him, the same is he which baptizeth with the Holy Ghost.
34- And I saw, and bare record that this is the Son of God.

John specifies well the Father and the Son. And in Luke 3:
16- John answered, saying unto [them] all, I indeed baptize you with water; but one mightier than I cometh, the latchet of whose shoes I am not worthy to unloose: he shall baptize you with the Holy Ghost and with fire: This doesn´t even have water to sink. Baptism with water is only a symbol, because even if you get a sponge with soap, and wash well, it would clean only the outside. Now Christ´s baptism (of spirit, fire) cleans the interior, like fire in gold and silver, purifies everything, inside and outside, or else, is like a charnel whitewashed outside.
In 1st Peter 3- 20-21, clears, the meaning of baptism, that Noah and his family was saved trough the water of the great flood.
21- The like figure whereunto [even] baptism doth also now save us (not the putting away of the filth of the flesh, but the answer of a good conscience toward God,)