13. Consider the case of Zaccheus the publican, who, having a sound apprehension of the doctrine of faith and conversion, freely acknowledged _that_ to be true faith by which a man is turned from sin to God, and in this order hopes to obtain a gracious pardon from Christ, and an interest in his merit, so as to rely upon it with a filial trust and an unshaken firmness of mind. In this manner did he understand the word of our Lord, “Repent ye, and believe the Gospel” (Mark 1:15): that is, Desist from sin, trust in my merits, and expect forgiveness of sin from me alone. Hence Zaccheus says to Christ, “Behold, the half of my goods I give to the poor; and if I have taken anything by false accusation, I restore fourfold.” Luke 19:8. In these words he does not commend his own works at all, but extols the grace of God, which had taught him the way of true repentance. As if he had said: “O Lord, I am so thoroughly grieved at the fraudulent practices which I have committed against my neighbor, that I will not only restore fourfold unto him, but will also bestow half of my goods on the poor. Wherefore, Lord, since I confess my sin, and fully resolve to leave it, I now embrace thy promises with faith, and beseech thee to receive me into thy grace and favor.” And no sooner is this resolution taken, than the Physician declares, “This day is salvation come to this house. For the Son of man is come to seek and to save that which was lost.” 14. This is true repentance and conversion, carried on by a faith which is the work of God within us. God himself will begin, advance, and finish at last, the great work of our salvation, if we only yield to his Spirit, and do not resist him wilfully, as did the refractory Jews of old; to whom the apostle says: “It was necessary that the word of God should first have been spoken to you: but seeing ye put it from you, and judge yourselves unworthy of everlasting life, lo, we turn to the Gentiles.” Acts 13:46. It is, therefore, our duty to take the advice of the physician, after the manner of the sick, and to obey his precepts and prescriptions. As the physician first explains the nature of the disease, so the Lord lays open the spiritual disease of the heart, and then, as a faithful physician, warns us against hurtful things, lest the healing virtue of the precious blood of Christ be obstructed, and at last rendered ineffectual.