Adam Clarke on Job 22:22

Receive, I pray thee, the law from his mouth - Some, who wish to place Job before the law given by Moses, say that this means the Noahic precepts; others, that the law of nature is intended! Stuff and vanity! The allusion is plainly to the law given by God to the children of Israel, called here by way of emphasis, תורה torah, the Law, which contained אמריו amaraiv, his Words, the words or sayings of God himself; consequently, it is not the Noahic precepts, nor the law of nature, neither of which were ever written or registered as the words of God's mouth.