Meaning: The ways of God are mysterious and hard to understand.
Eccles 7:13 Consider the work of God: for who can make that straight, which he hath made crooked?
Isaiah 40:4 Every valley shall be exalted, and every mountain and hill shall be made low: and the crooked shall be made straight, and the rough places plain:
Isaiah 45:2 I will go before thee, and make the crooked places straight: I will break in pieces the gates of brass, and cut in sunder the bars of iron: