Pauls theolgy on baptism of water. 1 Corinthians 1:17 For Christ did not send me to baptize, but to preach the gospel, not in cleverness of speech, so that the cross of Christ would not be made void.
1 Corinthians 12:28-30
28And in the church God has appointed first of all apostles, second prophets, third teachers, then workers of miracles, also those having gifts of healing, those able to help others, those with gifts of administration, and those speaking in different kinds of tongues. 29Are all apostles? Are all prophets? Are all teachers? Do all work miracles? 30Do all have gifts of healing? Do all speak in tongues
a]? Do all interpret?
Paul did not see his primary responsibility as baptizing, but this does not mean that he did not consider it important
since he himself had been baptized IMMEDIATELY upon hearing the gospel.
And yes, he did baptize a few people.
1 Corinthians 1:14-17
14I am thankful that I did not baptize any of you except Crispus and Gaius, 15so no one can say that you were baptized into my name. 16(Yes, I also baptized the household of Stephanas; beyond that, I don’t remember if I baptized anyone else.) 17For Christ did not send me to baptize, but to preach the gospel—not with words of human wisdom, lest the cross of Christ be emptied of its power.
Paul preached and left the baptizing to others.
Does God save people differently in the OT as He does in the NT; in other words does God change? Water baptism has never saved anyone and never will because this is not how God saves.
Baptism Saves
Romans 6:3-4
Or don’t you know that all of us who were baptized into Christ Jesus were baptized into his death? 4We were therefore buried with him through baptism into death in order that, just as Christ was raised from the dead through the glory of the Father, we too may live a new life.
1 Peter 3:18-22
18 For Christ died for sins once for all, the righteous for the unrighteous, to bring you to God. He was put to death in the body but made alive by the Spirit, 19 through whom also he went and preached to the spirits in prison 20 who disobeyed long ago when God waited patiently in the days of Noah while the ark was being built. In it only a few people, eight in all, were saved through water, 21 and this water symbolizes baptism that now saves you also—not the removal of dirt from the body but the pledge of a good conscience toward God. It saves you by the resurrection of Jesus Christ, 22 who has gone into heaven and is at God’s right hand—with angels, authorities and powers in submission to him.
Notice that the OT imagery of Noah (and the Israelites passing through the Red Sea) prefigure the water baptism of the NT.
Yeah, Baptism now saves you.