Bunyan's Perspective on Affliction

I've been teaching through Psalm 119 and the last few sections have had a lot to say about affliction.  In "The Hidden Smile of God", Piper confronts those who say God has no part in or plan for evil done to us.  He quotes Bunyan:

"It is not what enemies will, nor what they are resolved upon, but what God will, and what God appoints, that shall be done... And as not enemy can bring suffering upon a man when the will of God is otherwise, so no man can save himself out of their hands when God will deliver him up for his glory... We shall or shall not suffer; even as it pleaseth Him... God has appointed who shall suffer.  Suffering comes not by chance or by the will of man, but by the will and appointment of God."

I seem to have an easier time resting in God's sovereignty over suffering when the suffering is the result of 'natural' causes rather than the result of another person's actions.  I pray that God will give me the kind of faith Bunyan had in his prison cell.