Martin Luther, in his typical kinda-over-the-top style, commenting on John 15, wrote that God the Father says this to the devil:
“Devil, you are indeed a murderer and an evildoer; but I will use you for my purpose. You shall be My hoe; the world and your following shall be My manure for the fertilization of My vineyard.”
Oh Luther – only you have the guts to say this kind of thing. But oh how we need this perspective today – the devil, as Luther would say, is God’s devil! His trials and attacks are within God’s control, and even they are ultimately just a tool, a hoe, used for our good and God’s glory.
Luther’s Works, ed. J. Pelikan, vol 24 (St. Louis: Concordia Publising House, 1961) 195.