There's "...the doctrine of baptism
s,..." (Heb 6:2).
(Prepositions help -There's 3 baptisms)
1 -
By The Holy Spirit into Jesus which reconciles us to God is the baptism for salvation. Baptized by the Holy Spirit into the body of Christ by believing in His death, burial, and resurrection.
(Rev 1:5; Matt 26:28;
Mark 1:4-9, 16:16; Luk 3:3; 1 Cor 12:13;
Acts 2:38; Gal 3:27; II Cor 5;18).
Water and Spirit baptism follows salvation - not in a set order though
2 -
By another believer (water baptism) Jesus while on earth at his water baptism said, "... fitting for us to fulfill all righteousness," All 3 persons of the Godhead endorsed it (Matt 3:13-16). (Matt 3:6,11; 28:18-20; Acts 8:39, 10:47, 22:16;
John 3:5).
3 -
By Jesus who sends the promise of the Father baptists us "by," "with" and "in" the Holy Spirit (The Spirit baptism) includes when the Holy Spirit comes
upon us, He endures us with power for service to Him and to keep His Word. We are to "...keep on being filled with the Spirit." (Acts 1:5, 4:31, 8:14-17, 10:44-48, 11:16; Matt 3:11;
Mark 1:8,
Luke 3:16; 24:49, I Cor 12:13; Eph 5:18; I
John 3:24; Eze 36:25-28;
John 14:25-27).
They're different yet
"And there are three that bear witness in earth, the Spirit, and the water, and the blood: and these three agree in one." I
John 5:7-8