Alex. "In order to assert that there is a God who is supervising this, then it must follow that there is morally sufficient reason for it to occur" The Bishop could not give a convincing answer IMHO.
Not a Good God, but a bad 'god' would such as the ' god' of this world of badness aka Satan 2 Corinthians 4:4.
When Satan challenged Job (Job 2:4-5) by way of extension Satan was also challenging all of us.
Touch our 'flesh'.... ( loose physical health ) and we would Not serve God under adverse conditions.
Jesus was Not teaching at Luke 21:11 that pestilences were from his God but that such things would be happening before Jesus will come to our rescue - Revelation 22:2 - and bring healing to earth's nations.