12 Therefore, just as through one man sin entered into the world, and death through sin, and so death spread to all men, because all sinned— 13 for until the Law sin was in the world, but sin is not imputed when there is no law. 14 Nevertheless death reigned from Adam until Moses, even over those who had not sinned in the likeness of the offense of Adam, who is a type of Him who was to come. Romans 5:12-14 (NASB)
I am a Monergist, that is, I firmly believe that our salvation is God’s work from beginning to end, totally undeserved by all. There is not one person who deserves it nor can they do anything to earn it because of the fall of man from Genesis 3, therefore, it is a gracious gift from God and, these things being Biblically true, those who hold to them are Monergists. Synergists are those who believe the doctrine of the Fall of Man in Genesis 3 is either fallacious or not complete.