1Peter 5:9

But resist him, be firm in your faith (against his attack-rooted, established, immovable), knowing that the same experiences of suffering are being experienced by your brothers and sisters throughout the world.  (You do not suffer alone.) 

The devil wanders around, looking for cracks in the defenses.  He sends thoughts that are not ours and problems.  We don’t have to get mad, cry or worry, but God says we must RESIST the devil.  We are to stand our ground on the word and speak our faith and raise the shield.  Faith is a force of resistance to the attacks of the enemy.  Resist and be firm in your Faith.