"Have you an arm like God? . . . "
The Lord is asking this question of Job. Job had been a bit "uppitty" regarding his appraisal of God's ways with him (somewhat-understandably)--but now it is the Lord's turn to set the record straight. Every time we get all self-righteously perturbed about something bad happening in the world or in our own lives, there is a temptation to think, "I could (or would) do a better job than God does [at that]."
But that attitude is highly-imprudent. God humbles us, by bringing us to our senses; and then by asking questions like, "Have you an arm like God?" Of course, we do not. And we do not have His perfect wisdom, either.
[Puritan quote of the day: "Assurance will free you from the burden of fears, as well as from the burden of cares." --Thomas Brooks, in "Heaven on Earth"]