The Word of God is our weapon against the schemes of the enemy. When the enemy speaks lies or brings temptation, we have the Word of God to confront those lies with the truth of God's Word and flee temptation in the presence of God. The enemy has been defeated and has no power other than what we give him through open doors of sin and the words we come into agreement with. This means we must walk in repentance, unpartner with the lies of the enemy, and submit ourselves to the Lord!
"Submit yourselves, then, to God. Resist the devil, and he will flee from you." - James 4:7