5. But alas! here is the difficulty! These things are much more easily said, than reduced to practice. The reason is, because hardly any will earnestly engage in so weighty a work, or search into the true original cause of the many dreadful disorders that appear in our lives and conduct. Man flatters himself with a confident opinion of his own goodness, and cherishes the affection of the old man. There are few who care to see their hearts in their inward and native depravity; or to be made sensible of that vein of evil nature which runs through all their actions, even the best and most shining. And thus Christ himself, and the grace of God, manifested by him, are wantonly disregarded.
6. And yet Joel (2:12) requires us to “turn unto God with all our heart, with fasting, with weeping, and with mourning.” Hereby he intimates that we are turned away from God; have forsaken the fountain of living waters (Jer. 2:13); and are now unable to attain life and happiness again, unless we “search our ways,” and “return” [pg 195] unto him from whom we are gone astray. Lam. 3:40. It is for this purpose that the Prophet charges “backsliding children” to return, with the promise annexed, that the “Lord will heal their backslidings.” Jer. 3:22. For this verily is the will of God, that we should see and confess our misery, in order that he may compassionately heal it.
7. But since, by nature, we are so blind as to be utterly unable of ourselves sufficiently to discover our own wretchedness; God has been pleased to afford means, with a view to bringing us to a sound knowledge of ourselves. This is done by his holy Word and the Sacraments, which are always accompanied with his grace and Spirit. By these the Father draws, allures, and calls us to himself, as so many lost and wandering sheep. John 6:44. For as a straying sheep cannot of itself return, but must of necessity be sought and brought back to the fold by the shepherd, so we would forever go astray in the wilderness of sin and error, did not God himself carefully seek us; and this the examples of Peter and Paul abundantly confirm. Therefore the prophet says: “Turn thou me, O Lord, and I shall be turned; for thou art the Lord my God.” Jer. 31:18. “Heal me, O Lord, and I shall be healed; save me, and I shall be saved: for thou art my praise.” Jer. 17:14. “For it is God,” says the apostle, “which worketh in us, both to will and to do, of his good pleasure.” Phil. 2:13.
8. When, therefore, the Lord graciously awakens us by these means, and invites us to repentance, it is our part, not to withstand his grace and Spirit; (as it is said, “To-day if ye will hear his voice, harden not your hearts”) (Ps. 95:7, 8); but to confess the sin which he thus reproves in us, and by no means make light of the grace offered to us in the Gospel. Then God will assuredly have mercy upon us, as he himself declares: “Let the wicked forsake his way, and the unrighteous man his thoughts; and let him return unto the Lord, and he will have mercy upon him; and to our God, for he will abundantly pardon.” Isa. 55:7.
9. Upon this account the work of conversion, though it is entirely a work of God's grace, is yet in one respect ascribed to us; namely, as we give up ourselves to the Lord, and to his operations, and do not wantonly resist his Spirit, despise his grace, and cast it from us; or, as the apostle expresses it, do not put his Word from us, nor stop our ears against it, as did the Jews of old. Acts 13:46; 7:57. On the contrary, when the severity of the law has laid open our spiritual diseases, and we have felt the bitterness thereof; let us avail ourselves of the Gospel as a healing remedy, and suffer our heavenly Physician to restore us to health.
10. An image of this we have in a straying sheep. If it but hear at a distance the voice of the shepherd, it starts back immediately, and returns to him. And how willingly would the lost sinner follow the voice of his Shepherd, if sin had not so perverted him, as to reduce him lower than the very beasts in stupidity and dulness! Of this indeed the prophet complains: “The ox knoweth his owner, and the ass his master's crib: but Israel doth not know, my people doth not consider.” Isa. 1:3. “Shall they fall,” asks another prophet, “and not arise? Shall he turn away, and not return? The stork in the heaven knoweth her appointed times, and the turtle, and [pg 196] the crane, and the swallow, observe the times of their coming: but my people know not the judgment of the Lord.” Jer. 8:4, 7.
11. We ought, therefore, most fervently to implore the Lord, not to withdraw from us his gracious assistance, without which we must certainly go astray. For since sin and the old Adam constantly abide in our corrupt flesh and blood, we have need of daily, yea, hourly supplies of grace, for repressing the tyranny of sin, and for nourishing the life of God within us. The grace of God is the life of our soul, as the soul is the life of the body. And as the life of the body, without the free enjoyment of the air, must soon be extinct; so the vital flame of the inward life will speedily languish, without a daily supply of grace to support it. For this reason Solomon prayed: “The Lord our God be with us; let him not leave us, nor forsake us; that he may incline our hearts unto him, to walk in all his ways.” 1 Kings 8:57.
12. This is a lesson which ought not to be learned in a light and general manner, but by a close and practical application be brought home to every one in particular. Let, therefore, every one look into his own heart and seek its renewal, that so all may be reformed in time. Let us remember that comfortable exhortation, and the promise annexed thereto: “Seek ye the Lord while he may be found; call ye upon him while he is near.” Isa. 55:6. “And ye shall seek me, and find me, when ye shall search for me with all your heart, saith the Lord.” Jer. 29:13.
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.