Romans 12:19

                                                                    1 Peter 5:8

Be alert and of sober mind. Your enemy the devil prowls around like a roaring lion looking for someone to devour.

                                                Job 1:7
 
The LORD said to Satan, "Where have you come from?" Satan answered the LORD, "From roaming throughout the earth, going back and forth on it

                                               Proverbs 28:15

Like a roaring lion or a charging bear is a wicked ruler over a helpless people.

                                               Matthew 24:14

Therefore keep watch, because you do not know on what day your Lord will come.

                                               Mark 4:15

Some people are like seed along the path, where the word is sown. As soon as they hear it, Satan comes and takes away the word that was sown in them.

                                                            2 Corinthians 2:11

In order that Satan might not outwit us. For we are not unaware of his schemes.