Job 1:7
“And the LORD said unto Satan, Whence comest thou? Then Satan answered the LORD, and said, From going to and fro in the earth, and from walking up and down in it.”
Satan’s only chance of destroying a Christian is through finding opportunities they give him to destroy them. It is very evident in the dialogue between Satan and the LORD that the Christian is safe from Satan’s tactics if they will not give him any opportunities. If the Christian guards their life and doesn’t give Satan an opportunity to work in their heart and mind, they can overcome any temptation of the flesh.