Finally, Aaron and Hur sat him on a rock and propped up his hands until the Israelites finally defeated the Amalekites. In much the same way, if we continue in our prayers day in and day out, our adversary Satan and his forces are driven back. He might mount an attack from time to time when our prayers grow weak and short, and if we increase the fervency and intensity of our prayers he's beaten back again. But like the Amalekites, he has lots of stamina and he keeps coming back. He has footholds, strongholds, and fortresses in our lives in the form of sinful habits we refuse to break.
Unbelievers have no chance against Satan's billions of demons and their relentless fury.
If you're somebody who can't control a bad temper or desire for revenge, Satan has a stronghold. When your prayer life begins to deteriorate because you've grown weary of it, and you begin to grow slack in your reading in God's Word, you might or might not notice that your attitude is slipping back to where it was before you were saved. You'll be confronted by situations that anger and frustrate you, and you'll yield to the temptation to operate on the human level. John gives us the proper response to these times of failure. If we confess our sins, He is faithful and righteous to forgive us our sins and to cleanse us from all unrighteousness.