2 Corinthians 10:5

Casting down arguments and every high thing that exalts itself against the knowledge of God, bringing every thought into captivity to the obedience of Christ. 

Do you ever notice than when the devil starts to attack, he uses arguments and half-truths? The goal is to get us to doubt God’s word and His promises. We are to cast down the argument and anything he says to make us question the bible. The best thing to do is to focus our thoughts on the word and speak it out loud and clear out the doubts the devil tries to put in our minds.