On the night he was betrayed to be crucified, Jesus and his disciples ate the Passover meal together. It was at the end of this meal that our Lord took two of the elements from the table and attached the symbolism of his approaching sacrificial death.
As a symbol, baptism identifies the believer with Jesus Christ. Not only is he baptized in the name of the triune God, which implies divine ownership and authority over the individual, but he is to call on the name of the Lord.
No one can be compelled to believe or practice his faith according to the dictates of another. Attempts to do so always result in violent persecution of the dissenters.
No one can absolve your sins except God himself, neither can anyone perform an act of spiritual worship on your behalf.
If we seek to have an experience that is more real or more trustworthy to our minds than the promises of Scripture, we are in danger of setting aside Scripture altogether and of seeking another gospel.