The Bible doesn’t tell us in detail about Satan and how he works. After all, our focus should be on God, not on Satan. (If we concentrate mainly on Satan, we’ll become either overly fearful or overly fascinated – and both are wrong.)
But the Bible does tell us two important truths about Satan, (whose name means “adversary”). First, he is real, and he will do everything he can to draw us away from Christ.
Second, Satan is a defeated foe. By His death and resurrection, Jesus conquered Satan, so by the power of His Holy Spirit in us, we can stand against him.
Submit yourselves, then, to God. Resist the devil, and he will flee from you. Come near to God and he will come near to you.
Billy Graham – Wisdom For Each Day