Adam Clarke's Commentary on the Bible - Exodus 18:12
Jethro - took a burnt-offering - עלה olah . Though it be true that in the patriarchal times we read of a burnt-offering, (see Genesis 22:2 , etc)., yet we only read of one in the case of Isaac, and therefore, though this offering made by Jethro is not a decisive proof that the law relative to burnt-offerings, etc., had already been given, yet, taken with other circumstances in this account, it is a presumptive evidence that the meeting between Moses and Jethro took place after the... read more
Adam Clarke's Commentary on the Bible - Exodus 18:11
Now I know that the Lord is greater than all gods - Some think that Jethro was now converted to the true God; but it is very probable that he enjoyed this blessing before he knew any thing of Moses, for it is not likely that Moses would have entered into an alliance with this family had they been heathens. Jethro no doubt had the true patriarchal religion. Wherein they dealt proudly - Acting as tyrants over the people of God; enslaving them in the most unprincipled manner, and still... read more