Prophets often foretold destruction and sometimes the destruction did not come, yet this did not disprove their divine mission, as in the case of Jonah. For God is gracious, and ready to turn away his wrath from those who turn away from their sins. But the prophet who prophesied peace and prosperity absolutely and unconditionally without adding the necessary proviso, that they do not by willful sin put a bar in their own door and stop the coming of God's favors, will be proved a true prophet only by the accomplishment of his prediction.