According to the Bible, angels are spirit beings created by God to serve his purposes. However, one angel became proud, which is the root of much sin, and preferred to be his own god rather than worship and obey the real God (Isa. 14:11–23; Ezek. 28:1-12). We now know him by various names such as Satan, the Dragon, the Serpent, the Enemy, the Devil, the Tempter, the Murderer, the Father of Lies, the Adversary, the Accuser, the Destroyer, and the Evil One. Tragically, one-third of the angels sided with Satan to declare war on God.
Their rebellion culminated in a great battle against God and his holy angels. Satan and his demons lost and were kicked out of heaven without the possibility of ever being forgiven or reconciled into a right relationship with God (2 Pet. 2:4; Jude 6).
After the great war in heaven, continuing on with the story of Scripture, the scene shifts to a new battlefield—earth. Here, Satan attacked our first parents, our father Adam and mother Eve. Satan lied to Eve and tempted her to sin, just as he did each of us. Adam, whom God appointed to love and care for Eve, failed to protect her, and knowingly joined her in sin.
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