(17) The thing that thou doest is not good.--Weighty as the arguments were, they failed to convince Jethro. He brought forward counter-arguments. By continuing to act as hitherto, Moses would, in the first place, exhaust his own strength, and, secondly exhaust the patience of the people. His practice was un advisable, both on his own account and on theirs. To keep suitors waiting all day, and perhaps finally dismiss then without their turn having come, was not fair upon them.

18:13-27 Here is the great zeal and the toil of Moses as a magistrate. Having been employed to redeem Israel out of the house of bondage, he is a further type of Christ, that he is employed as a lawgiver and a judge among them. If the people were as quarrelsome one with another as they were with God, no doubt Moses had many causes brought before him. This business Moses was called to; it appears that he did it with great care and kindness. The meanest Israelite was welcome to bring his cause before him. Moses kept to his business from morning to night. Jethro thought it was too much for him to undertake alone; also it would make the administration of justice tiresome to the people. There may be over-doing even in well-doing. Wisdom is profitable to direct, that we may neither content ourselves with less than our duty, nor task ourselves beyond our strength. Jethro advised Moses to a better plan. Great men should not only study to be useful themselves, but contrive to make others useful. Care must be taken in the choice of the persons admitted into such a trust. They should be men of good sense, that understood business, and that would not be daunted by frowns or clamours, but abhorred the thought of a bribe. Men of piety and religion; such as fear God, who dare not to do a base thing, though they could do it secretly and securely. The fear of God will best fortify a man against temptations to injustice. Moses did not despise this advice. Those are not wise, who think themselves too wise to be counselled.And Moses's father in law said unto him,.... Having observed what he did, and heard his answer to the question he put to him:

the thing that thou doest is not good; not meaning that it was not morally good, or that it was morally evil; for it was certainly a good thing to inquire of the mind and will of God for the people, and to hear and decide matters in controversy between them, and do justice to both parties; but it was not good for the health of Moses; it was not commodious and convenient for him; it was not for his bodily welfare; it was too much for him, as he explains himself in the next verse.