Faith comes from hearing and hearing from the word of God. Man doesn't accept anything on his own accord. God instills faith into men. He does that through the preaching of His word. And He has given us the honorable task of spreading the word. But God's word will go where He so directs.
Of course, we make mistakes in receiving the message of the Spirit...What happened to predestination!?
Not a thing. EVERYTHING works together for good to those who are called according to His purpose. When we make mistakes we learn and grow from those mistakes. When David murdered Uriah, as severe as that act had on the rest of David's life, he learned and grew from that experience. And, since God dictates the time of all of our deaths, David's murder of Uriah was ordained of God although it was still punished as sin. GASP!
Likewise, we as Christians make mistakes but God isn't surprised by any of it. He uses it to teach us and to help us to grow.
I think it has been clearly stated here that once saved you cannot sin because you are on God's tractor beam, and He doesn't make mistakes.
I don't know of any Calvinist on this board who would make such a claim and it's certainly not in the Westminster Confessions. John states that we no longer "practice sin". We become "slave to righteousness" but that doesn't mean we don't sin from time to time.
This is what FK said: "but a person does need to ... know God well enough to accept Him."
If you carefully read what he said, you will understand that, while the knowledge may come from God, the decision is made by us. Freudian slip? Maybe.
In other words, once God has revealed himself enough to us, we accept God, not the other way around (obviously, He has already accepted us by revealing Himself spiritually). But the decision to accept must be based on our own free will, or else it is not our acceptance. Forced acceptance, tricked acceptance, etc. is not acceptance.