I think it’s very important that we Christians come to know the Truth. We must love God with our entire heart, soul, MIND and strength. The MIND part is why most of us are here. We’re trying to understand Him with our entire MIND.
And, I believe that it is incorrect to say that the main thing is you* believe* in God. For Scripture does not say that–in fact Scripture says in James that even the demons
believe.
I’ve heard of a 56 yr old Pastor, who believes in God and Scripture, marrying a 14 yr old young girl.

Clearly, belief is not enough.