We have to be alert and on guard at all times. Satan is always watching us and waiting for us to slip up so he can try and get us to turn away from God. But if we resist him, he will flee.

I Peter 5:8-11

v.8 Be sober, be vigilant; because your adversary the devil, as a roaring lion, walketh about, seeking whome he may devour:

v.9 Whom resist stedfast in the faith, knowing that the same afflictions are accomplished in your brethren that are in the world.

v.10 But the God of all grace, who hath called us unto his eternal glory by Christ Jesus, after that ye have suffered a while, make you perfect, stablish, strengthen, settle you.

v.11 To him be glory and dominion for ever and ever. Amen