Luke 21:36
But watch ye at every season, praying that ye may have full strength to escape all these things that are about to come to pass, and to stand before the Son of Man."
Luke 22:31
"Simon, Simon, behold, Satan asked for you, to sift you as the wheat;
Acts 7:30-38
And, forty years having been fulfilled, there appeared to him, in the wilderness of mount Sinai, an angel in a flame of fire in a bush.
1 Peter 5:8
Be sober, be watchful. Your adversary the Devil, as a roaring lion, is going about, seeking whom he may devour;
Revelation 12:9-10
And the great dragon was cast down, the old serpent, he that is called the Devil and Satan, who deceives the whole habitable earth; he was cast down to the earth, and his angels were cast down with him.