Rebirth or regeneration is monergistic, not synergistic. It is done by God and by God alone. A dead man cannot cooperate with his resurrection. Lazarus did not cooperate in his resurrection. Regeneration is a sovereign act of God in which man plays no role. After God brings us to life, of course, we certainly are involved in “cooperating” with Him. We are to believe, trust, obey, and work for Him. But unless God acts first, we will never be reborn in the first place. We must also realize it is not as if dead people have faith, and because of their faith God agrees to regenerate them. Rather, it is because God has regenerated us and given us new life that we have faith.
R.C. Sproul