Yeah I'm going with Jesus on this one.
1. Men cannot come to Christ, cannot believe and follow Him, without God regeneration them, drawing them into Christ. This is because Men are slave to sin, every single one of them.
2. Once in Christ, they will never be cast out. God will sanctify them. Discipline them. Keep them. Christ saves everyone God had sent Him to, and fails to save none. Anyone who "falls away" was deluding themselves as to their election, as God cannot fail to redeem the people that He has predestined to Himself.
3. A man who was predestined to be redeemed to God is unable to resist God; he is forced into the process of redemption. He is changed forever. Transformed. Free will violated by God's sovereignty. Gradually washed and prepared for God he will be.
This is the offensive reality of the Gospel.