John Piper

God has ordained that Satan have a long leash with God holding on to the leash because he knows that when we walk in and out of those temptations, struggling with both the physical effects that they bring and the moral effects that they bring, more of God's glory will shine.

Once, I went speeding past an old couple and smiled as I imagined their conversation: him grumbling about me and her telling him not to be such an old grouch. Then, suddenly I was in tears, thinking, 'I'll never get to be a grumpy old grandpa!'