Baptism separates the tire kickers from the car buyers.
Indeed, baptism is a vow, a sacred vow of the believer to follow Christ. Just as a wedding celebrates the fusion of two hearts, baptism celebrates the union of sinner with Savior.
Is it possible for an unbaptized believer to be saved? Yes, definitely. Should every believer be baptized? Yes, definitely.
Baptism is the initial step of a faithful heart.
Baptism is bowing before the Father and letting him do his work.