One is baptized into Christ by water baptism in Jesus' name into his death.Yes, believers receive a measure of the Holy Spirit in the new covenant, but are still not FILLED with the Holy Spirit at that time, there is a further infilling of the Holy Spirit, which happened on Pentecost, but thereafter newly saved believers had to have hands laid on them by a Spirit filled believer, to also be filled with the Holy Spirit:
Act 8:14 Now when the apostles which were at Jerusalem heard that Samaria had received the word of God, they sent unto them Peter and John:
Act 8:15 Who, when they were come down, prayed for them, that they might receive the Holy Ghost:
Act 8:16 (For as yet he was fallen upon none of them: only they were baptized in the name of the Lord Jesus.)
Act 8:17 Then laid they their hands on them, and they received the Holy Ghost.
Next example:
Act 19:1 And it came to pass, that, while Apollos was at Corinth, Paul having passed through the upper coasts came to Ephesus: and finding certain disciples,
Act 19:2 He said unto them, Have ye received the Holy Ghost since ye believed? And they said unto him, We have not so much as heard whether there be any Holy Ghost.
Act 19:3 And he said unto them, Unto what then were ye baptized? And they said, Unto John's baptism.
Act 19:4 Then said Paul, John verily baptized with the baptism of repentance, saying unto the people, that they should believe on him which should come after him, that is, on Christ Jesus.
Act 19:5 When they heard this, they were baptized in the name of the Lord Jesus.
Act 19:6 And when Paul had laid his hands upon them, the Holy Ghost came on them; and they spake with tongues, and prophesied.
And, BTW, it still works that way today - a Christian is not FILLED with the HS until a Spirit filled believer lays hands on them.
The Holy Ghost raises the dead man from that point in his or her life.
Those that are calling themselves alive without dying are spirit zombies that must die(be killed by repentance) and buried deep in the watery tomb(baptism).
The Spirit does not cancel the death/burial part of our born again experience.
Only theologians practice this modern day "baptism cancel culture" by cancelling baptism.