There is 'one baptism'--- a baptism we share in common. Hebrews 6 speaks of 'baptisms'-- plural. The word translated 'baptism' is also used allegorically.
Yes & I cited the salvation sealing eternally purifying Holy Spirit in post #100. The Holy Spirit. No water involved.
If Jesus is (alive) talking, it's old covenant. The new covenant doesn't begin until after Jesus' death & resurrection.
Gal 4:
4 But when the fulness of the time was come, 4 But when the fulness of the time was come, God sent forth his Son, made of a woman, made under the law,
5 To redeem them that were under the law, that we might receive the adoption of sons.
(MY NOTE: (4) God sent His Son made under the law. (5) To redeem them that were under the law.)
No one is saved until Jesus dies & is resurrected. No one received the eternal life giving, salvation sealing baptism purification with Christ's Holy Spirit. Until the 1st post resurrection Pentecost (Acts 2:1-4)
John 7:
38 He that believeth on me, as the scripture hath said, out of his belly shall flow rivers of living water
39 (But this spake he of the Spirit, which they that believe on him should receive: for the Holy Spirit was not yet given; because that Jesus was not yet glorified)
(MY NOTE: The Holy Spirit was not yet given because that Jesus was not yet glorified/resurrected)
The PROMISE = Holy Spirit will be given
Luke 24:49 And, behold, I send ""the promise"" of my Father upon you: but tarry ye in the city of Jerusalem, until ye be endued with power from on high
(MY NOTE: Jesus teaches he will send "the promise" the Father made him)
Act 1:4 And, being assembled together with them, commanded them that they should not depart from Jerusalem, but wait for "the promise" of the Father, which, saith he, ye have heard of me
(MY NOTE: Jesus tells them to wait in Jerusalem for "the promise" of the Father)
5 For John truly baptized with water; but ye shall be baptized with the Holy Spirit not many days hence.
(MY NOTE: Jesus foretells the giving/baptism/out pouring of the indwelling Holy Spirit to come)
PROMISE Fulfilled
Acts 2:
1 (A) when the day of Pentecost was fully come
(MY NOTE: When the day of Pentecost had fully come)
4 And they were all "filled with the Holy Spirit" and began to speak with other tongues, as the Spirit gave them utterance
(NOTE: Here it is "filled with the Holy Spirit" the new covenant begins right here. Christ's baptism with His salvation sealing indwelling Holy Spirit)
Act 2:33 Therefore being by the right hand of God exalted, and having received of the Father the promise of the Holy Spirit, he hath shed forth this, which ye now see and hear
(MY NOTE: After Christ's glorification/resurrection. Christ sends the Promise given to Him from the Father = Holy Spirit)
New Covenant Spiritual/Purifying Seal: Christ's baptism with the indwelling Holy Spirit
Eph 1:13 In whom ye also trusted, after that ye heard the word of truth, the gospel of your salvation: in whom also after that ye believed, ye were sealed with that holy Spirit of promise.
(MY NOTE: Christ SEALS believers with Gods promise of the indwelling Holy Spirit)
Ehp 4:30 And grieve not the holy Spirit of God, whereby ye are sealed unto the day of redemption.
(MY NOTE: Believers are SEALED Gods Holy Spirit until the day thier Adamic corruptible bodies are redeemed & transformed into, eternal, incorruptible Heavenly bodies)
John 14:16 And I will pray the Father, and he shall give you another Comforter, that he may abide with you for ever;
(MY NOTE: The Comforter < {translators Capitalized showing deity} = Holy Spirit will abide with you FOREVER)