In one of the most comforting and encouraging New Testament passages, our Lord tells us why Satan can’t have us:
Jesus made known that He intercedes with the Father on behalf of all believers. He prays that they will endure in their faith in the face of much opposition by Satan:“Simon, Simon, behold, Satan demanded to have you, that he might sift you like wheat, but I have prayed for you that your faith may not fail. And when you have turned again, strengthen your brothers.” —Luke 22:31–32
Jesus prays this prayer for His elect, asking the Father to overcome Satan’s attempts to subvert the faith of true believers. God always answers this prayer. As a result, the faith of all of the elect never fails. Ryle explains, “The continued existence of grace in a believer’s heart is a great and constant miracle. His enemies are so mighty and his strength is so small, the world is so full of traps, and his heart is so weak, that it seems at first sight impossible for him to reach heaven. This passage explains how he is kept safe. He has a mighty friend at the right hand of God who always lives to intercede for him. He has a watchful advocate who is daily pleading for him, seeing all his daily necessities, and obtaining daily supplies of mercy and grace for his soul. His grace never totally dies because Christ lives to intercede (Hebrews 7:25).”
—Steve Lawson, Foundations of Grace (Reformation Trust, 2006), 257.