1. What we are here called to, which will teach us what it is to repent, for it is the same that the Lord our God still requires of us, we having all made work for repentance. (1.) We must be truly humbled for our sins, must be sorry we have by sin offended God, and ashamed we have by sin wronged ourselves, both wronged our judgments and wronged our interests. There must be outward expressions of sorrow and shame, fasting, and weeping, and mourning; tears for the sin that procured it. But what will the outward expressions of sorrow avail if the inward impressions be not agreeable, and not only accompany them, but be the root and spring of them, and give rise to them? And therefore it follows, Rend your heart, and not your garments; not but that, according to the custom of that age, it was proper for them to rend their garments, in token of great grief for their sins and a holy indignation against themselves for their folly; but, "Rest not in the doing of that, as if that were sufficient, but be more in care to accommodate your spirits than to accommodate your dress to a day of fasting and humiliation; nay, rend not your garments at all, unless withal you rend your hearts, for the sign without the thing signified is but a jest and a mockery, and an affront to God." Rending the heart is that which God looks for and requires; that is the broken and contrite heart which he will not despise, Ps. li. 17. When we are greatly grieved in soul for sin, so that it even cuts us to the heart to think how we have dishonoured God and disparaged ourselves by it, when we conceive an aversion to sin, and earnestly desire and endeavor to get clear of the principles of it and never to return to the practice of it, then we rend our hearts for it, and then will God rend the heavens and come down to us with mercy. (2.) We must be thoroughly converted to our God, and come home to him when we fall out with sin. Turn you even to me, said the Lord (v. 12), and again (v. 13), Turn unto the Lord your God. Our fasting and weeping are worth nothing if we do not with them turn to God as our God. When we are fully convinced that it is our duty and interest to keep in with him, and are heartily sorry we have ever turned the back upon him, and thereupon, by a firm and fixed resolution, make his glory our end, his will our rule, and his favour our felicity, then we return to the Lord our God, and this we are all commanded and invited to do, and to do it quickly.