LOL!
DO YOU READ THE SCRIPTURES YOU REFER TO?
Peter says explicitly, Baptism does now save you!!
who cares what John Gill says?
see Acts 2:38 and 22:16 for starters.
see 2,000 years of historical Christian faith.
see the difference between a kingdom of believers and a body of believers.
see the difference between prophecy and mystery.
see the differences between Peter and the 11 and Paul.