And Jethro rejoiced for all the goodness - Every part of Jethro's conduct proves him to have been a religious man and a true believer. His thanksgiving to Jehovah ( Exodus 18:10;) is a striking proof of it; he first blesses God for the preservation of Moses, and next for the deliverance of the people from their bondage.
In all their experiences, God was trying to teach them obedience to their heavenly Guide, and faith in His power to deliver them. Their deliverance from affliction in Egypt, and their passage through the Red Sea, revealed to them His power to save. When they rebelled against Him, and went contrary to His will, God punished them. When they persisted in their rebellion, and were determined to have their own way, God gave them that for which they asked, and in this way showed them that, that which He withheld from them, He withheld for their own good. Every judgment that came as a result of their murmurings was a lesson to that vast multitude, that sorrow and suffering are always the result of transgression of the laws of God. TDG 254.4
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