God wills that which is good, by approving it; that which is evil — in as much as it is evil — by disallowing and forsaking it. And yet, He voluntarily permits evil, because it is good that there should be evil.
the power of evil is both great and universal, is an ever present blight on life in all its manifestations, and is a matter of daily experience in the life of every man.
The answer to the problem of evil does not lie in trying to establish its point of origin, for that is simply not revealed to us. Rather, in the moment of the cross, it becomes clear that evil is utterly subverted for good.... If God can take the greatest of evils and turn them for the greatest of goods, then how much more can he take the lesser evils which litter human history, from individual tragedies to international disasters, and turn them to his good purpose as well.
Instead of saying that because there is evil in the world God can't be wise, because God is wise, the evil in the world makes sense as a means to ultimate good and ultimate glory for the God who is overruling all that happens. Systematic A Lecture
An idea which is more pagan than Christian has got hold of people's minds, [that] if God was really good and really loving he would behave like an indulgent parent without standards like a parent behaves in the human family today. He would keep the children from any pain or grief that he could, and give them anything they happen to want. Well you know what happens to a human child when brought up like that, they are a spoiled child, and they never attain human maturity. Systematic Lecture