Man’s first fall was initiated by Satan through the deceiving by the serpent (2 Cor. 11:3). The crafty serpent was the embodiment of Satan, the Devil, the enemy and adversary of God (Matt. 13:39; Rev. 12:9 and note Rev. 12:93b and note Rev. 12:94c) and the tempter of man (Matt. 4:3; 1 Thes. 3:5).
Immediately after the first two chapters of Genesis, Satan came in, and immediately before the last two chapters of Revelation, he will be cast out (Rev. 20:10). Between the first two chapters and the last two chapters of the Bible, Satan, the serpent, is constantly working to corrupt and damage humanity and to thereby frustrate God from carrying out His eternal purpose. In every generation the goal of God’s divine work is to build up the Body of Christ to express His Son, Christ, and also to eliminate the serpent.