5 And the people of Nineveh believed God; they proclaimed a fast, and everyone, great and small, put on sackcloth. 6 When the news reached the king of Nineveh, he rose from his throne, removed his robe, covered himself with sackcloth, and sat in ashes. 7 Then he had a proclamation made in Nineveh: "By the decree of the king and his nobles: No human being or animal, no herd or flock, shall taste anything. They shall not feed, nor shall they drink water. 8 Human beings and animals shall be covered with sackcloth, and they shall cry mightily to God. All shall turn from their evil ways and from the violence that is in their hands. 9 Who knows? God may relent and change his mind; he may turn from his fierce anger, so that we do not perish."
Matthew Henry's Commentary on Jonah 3:5-9
Commentary on Jonah 3:5-10
(Read Jonah 3:5-10)
There was a wonder of Divine grace in the repentance and reformation of Nineveh. It condemns the men of the gospel generation, Psalm 66:18. The work of a fast-day is not done with the day. The Ninevites hoped that God would turn from his fierce anger; and that thus their ruin would be prevented. They could not be so confident of finding mercy upon their repentance, as we may be, who have the death and merits of Christ, to which we may trust for pardon upon repentance. They dared not presume, but they did not despair. Hope of mercy is the great encouragement to repentance and reformation. Let us boldly cast ourselves down at the footstool of free grace, and God will look upon us with compassion. God sees who turn from their evil ways, and who do not. Thus he spared Nineveh. We read of no sacrifices offered to God to make atonement for sin; but a broken and a contrite heart, such as the Ninevites then had, he will not despise.