13. But in order to true repentance, it is not enough to refrain only from gross sins, and foul visible transgressions; but the heart, whence all those evils proceed, is to be changed and purified; that so inward pride, covetousness, and lust, with all sinful affections, may be mortified at last. For whilst the heart is unchanged, unreformed, and unrenewed; that is, whilst our own corrupt temper, our inward malice, wrath, hatred, enmity, revenge, lying, and deceit, are quietly suffered within us; all our boasts of, and pretences to, and formalities in, religion, are but mere show and hypocrisy. God requires no less than a new heart, and “a new creature in Christ Jesus.” 2 Cor. 5:17. No one is so holy, so good, and so thoroughly cleansed, but he will still find something in his own heart to be thrown out, or to be amended and rectified. “As a fountain casteth out her waters, so Jerusalem casteth out her wickedness.” Jer. 6:7. This is the first head, relating to the nature of repentance, of which more has been said in Book I. 14. Let us now consider, in the second place, the _manner_ of our returning to God: “with all the heart,” says the prophet, “with fasting, with weeping, and with mourning.” Wretched mortals can weep floods of tears for empty and perishing goods, whilst they stand unmoved at the miserable state of their souls, and at the loss of an eternal and incorruptible inheritance! In this they are altogether unlike David, who, by his example, sets a most shining pattern of sincere and unfeigned repentance before us. See Ps. 6, and Ps. 38. “For the Lord looketh on the heart” (1 Sam. 16:7), and “trieth the heart and reins.” Ps. 7:9. 15. What the prophet says of fasting, is to be understood of a general fast enjoined by the prophet to all the people. In such a fast the whole body of a nation were wont to be concerned. They publicly confessed their sins; they deplored and bewailed them; and thus humbling themselves before God, fasted both inwardly and outwardly. And in this order they begged remission of sin, and deprecated the judgments of God gathering over them. Such a general fast and public repentance as this, such sincere conversion, prayer, faith, confession, and supplication, are the most effectual means to appease the wrath of an offended God, and to avert his judgments from whole kingdoms and nations. This plainly appears from the history of the defeat of the other tribes of Israel, by that of Benjamin; in which the former having in two battles lost forty thousand men, all went up and came before the Lord, with weeping and mourning, and there fasted the whole day, from morning to night. Judges 20:26. A similar illustrious example is recorded of the fast of the Ninevites (Jonah 3:5, 10): and of the children of Israel, who, being beaten by the Philistines, kept a fast for seven days together, after Saul and Jonathan were slain in the battle. 1 Chron. 10:12.