This is one evidence of that meekness for which Moses is justly magnified, that he disdained not to receive advice from one so much his inferior in wisdom, and learning, and knowledge of the things of God. And God would have this wise counsel to come from Jethro, not from Moses himself, to show how variously he distributes his gifts, and to teach all men not to think too highly of themselves, nor to despise the counsels even of their inferiors. Moses did all that he had said, not immediately, but after he had received God's approbation, Numbers 11:16, and the people's consent, Deuteronomy 1:14.
Related Commentaries of Exodus 18:24
Exodus 18:24
24 So Moses hearkened to the voice of his father in law, and did all that he had said.