Baptism opens the door to salvation, but it does not assure it.
Without baptism, you go to hell, period.
Then baptism doesn't save.
Without Christ one goes to hell, period.
Funny, I thought Christ said He was the door.
John 10:7-9 7So Jesus again said to them, "Truly, truly, I say to you, I am the door of the sheep. 8All who came before me are thieves and robbers, but the sheep did not listen to them. 9I am the door. If anyone enters by me, he will be saved and will go in and out and find pasture.
If you add anything to Christ, you're saying that the finished work of Christ on the cross was not enough to save. It's Christ and _________. That makes the salvation dependent on the thing you add to Christ.
Baptism does NOT save.