fall resulted from two major causes: one internal (his own free will) and one external (the devil). With the latter in mind, the origin of sin among humans must take into consideration the same among the angelic host. There was an “Evil One” who tempted Adam and Eve into sin. The serpent appears in Genesis 3 but without a background offered for his presence in the garden. The unfolding of God’s revelation gives us more information, but the snake plotting to deceive the woman into disobedience