IF OSAS is true - that once you receive the Holy Spirit, you can never lose Him - then in fact John the Baptist didn't need to do anything to be saved - according to OSAS. According to the other perspective, children need to consciously believe in Jesus Christ when they come of age. Those who believe in infant baptism, as I do, believe babies receive the Holy Spirit when they are baptized, as children, by the faith of their parents, just like the faith of their parents was accepted for circumcision. However, when children come of age, they have to accept Jesus as their personal Savior, and if they refuse to, they lose the Holy Spirit.
OSAS is true, because today, we are given the HS as a pledge UNTIL the day of redemption.
He is the gaurantee of our salvation not ourselves.. we on our best day deserve condemnation..
that is something that people who reject eternal security overlook. You can never earn your salvation.. if you can never earn it, you can never unearn it..