Is this God's will? It's common for people to blur the line between the possible good that can come out of evil, to calling evil itself a "good thing". With sickness, this gets really messy, but if we think about other evils, we can get our blurry lines snapped back into shape pretty fast. Jesus gives us direction to not confuse the good that can come from evil, while still naming some things as evil, bad, and broken.