Luke 21:36
But you should be alert at all times, offering earnest prayers, so that you will be strong enough to escape all these things that will happen, and to appear [acceptable] in front of the Son of man [on that day]."
Luke 22:31
"Simon, Simon [i.e., Peter], Satan has earnestly requested the right to sift you like wheat. [Note: Grain was sifted by using a sieve-like device in which grain and particles of dirt and straw were shaken together, allowing the grain to fall through while the dirt and straw remained. This was an allusion to the agitating trials Peter was soon to endure, and survive].
Acts 7:30-38
"Then after [another] forty years passed, an angel appeared to him [one day] out of a flaming bush in the wilderness near Mt. Sinai.
1 Peter 5:8
Be sensible and alert; your enemy the devil is prowling around like a roaring [i.e., hungry] lion looking for someone to [kill and] eat.
Revelation 12:9-10
Then the great dragon was thrown out [of heaven]; he is the snake from ancient times who is [also] called "the Devil," and "Satan," the deceiver of the entire world. He was thrown down to earth along with his angels.