פּירוש אויף שמות 18:17

ויאמר חתן משה AND MOSES’ FATHER-IN-LAW SAID — By way of honour Scripture describes him as the father-in-law of the king.

לא טוב הדבר, “the matter is not right;” in my eyes what you are doing now is not good;

As a way to honor him. . . Why did Rashi not make this comment before, where it said, “Moshe’s father-in-law saw” (v. 14)? The answer is: This verse here is preceded by (v. 15), “Moshe said to his father-in-law.” So here it should say, “His father-in-law said,” not, “Moshe’s father-in-law said.” Thus Rashi explains that [Moshe was mentioned] as a way to honor Yisro. And this is why Rashi did not make this comment before.