20Which sometime were disobedient, when once the longsuffering of God waited in the days of Noah, while the ark was a preparing, wherein few, that is, eight souls were saved by water.
21The 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,) by the resurrection of Jesus Christ(1 Peter 3:20-21).


This is definitely talking about water,in which it says baptism does save us,and Jesus said you must be born of water and the Spirit,showing they are separate baptisms,water and Spirit.Jesus would not mention 2 baptisms of the Spirit,if water were meant to be Spirit.Jesus said all who are baptized shall be saved.


It would seem like the reasoning for baptism to save us,is that we have to identify with the man Christ Jesus,when He died,was buried,and rose from the grave,by repenting of sins,being baptized in water,and receiving the Holy Spirit,which the Bible says we are a living sacrifice unto God.


Jesus sacrificed His life,and we are a living sacrifice unto God,so we would have to identify with the man Christ Jesus,and since we are a living sacrifice,and do not die physically,we identify with the man Christ Jesus by doing it by dying out to sin,and being baptized in water.