Adam Clarke on Exodus 2:23

In process of time - the king of Egypt died - According to St. Stephen, (Act 7:30, compared with Exo 7:7), the death of the Egyptian king happened about forty years after the escape of Moses to Midian. The words ויהי בימים הרבים ההם vayehi baiyamim harabbim hahem, which we translate And it came to pass in process of time, signify, And it was in many days from these that the king, etc. It has already been remarked that Archbishop Usher supposes this king to have been Ramesses Miamun, who was succeeded by his son Amenophis, who was drowned in the Red Sea when pursuing the Israelites, but Abul Farajius says it was Amunfathis, (Amenophis), he who made the cruel edict against the Hebrew children. Some suppose that Moses wrote the book of Job during the time he sojourned in Midian, and also the book of Genesis. See the preface to the book of Job, where this subject is considered.

Sighed by reason of the bondage - For the nature of their bondage, see Clarke's note on Exo 1:14.