Never forget that you have an adversary who “walks about like a roaring lion, seeking whom he may devour” (1 Pet. 5:8). Notice the word “may.” It is a word of permission. If you are in sin (his territory), he has permission to devour you. But you must “flee these things and pursue righteousness, godliness, faith, love, patience, gentleness. Fight the good fight of faith, lay hold on eternal life, to which you were also called and have confessed the good confession in the presence of many witnesses” (1 Tim. 6:11,12).
Job 1:7 And the Lord said to Satan, “From where do you come?” So Satan answered the Lord and said, “From going to and fro on the earth, and from walking back and forth on it.”