Rend your hearts and not your garments.Joel 2:13
The tearing of garments and other outward signs of religious emotion are easily displayed and are frequently hypocritical; but to feel true repentance is far more difficult, and consequently far less common. Men will pay attention to the most minute ceremonial regulations--for those things are pleasing to the flesh. But true faith is too humbling, too heart-searching, too thorough for the tastes of people of the flesh; they prefer something more ostentatious, flimsy, and worldly.
Outward observances are temporarily comfortable; eye and ear are pleased; self-conceit is fed, and self-righteousness is puffed up: But they are ultimately delusive, for in the face of death, and at the day of judgment, the soul needs something more substantial than ceremonies and rituals to lean upon. Apart from vital godliness all religion is utterly vain; offered without a sincere heart, every form of worship is a solemn sham and an impudent mockery of the majesty of heaven.
Heart-rending is divinely worked and solemnly felt. It is a secret grief that is personally experienced, not in mere form, but as a deep, soul-moving work of the Holy Spirit upon the inmost heart of each believer. It is not a matter to be merely talked about and believed in, but keenly and sensitively felt in every living child of the living God. It is powerfully humiliating and completely sin-purging, but it is also sweet preparation for the gracious consolations that proud, unhumbled spirits are unable to receive; and it is distinctly discriminating, for it belongs to the elect of God, and to them alone.
The text commands us to rend our hearts, but they are naturally as hard as marble: How, then, can this be done? We must take them to Calvary: A dying Savior's voice rent the rocks once, and it is as powerful now. O blessed Spirit, let us hear the death-cries of Jesus, and our hearts shall be rent even as men tear their garments in the day of lamentation.