In the video clip below, J. Warner Wallace explains why you can’t make sense of the problem of evil apart from an understanding of the wisdom of God.
It turns out it’s the wisdom of God that makes sense of the restrained power of God. It may simply be that God is not going to do something because He knows what the consequence would be.
If you’re looking for an in-depth discussion of the problem of evil, I highly recommend Randy Alcorn’s book If God Is Good: Faith in the Midst of Suffering and Evil. (It’s lengthy, but very readable.)