If, after ridding themselves of error, men pass through disbelief on their way to a better understanding of God and faith, then so be it. But "men" are completely depraved, and if they are not elect, what good does "a better understanding of God and faith" do for them? They're going to hell anyway, right? They have no hope, if they were condemned from all eternity.
Not sure what you're posting, but all men are called to faith in Christ. Those who respond in faith have been reborn by the Holy Spirit to know the things of God and to love Christ's appearing.
Those who don't respond in faith do not want to respond in faith.