In the first place, lest any one may think that we speak concerning an idle knowledge of the history, we must declare how faith is obtained [how the heart begins to believe]. Afterward we will show both that it justifies, and how this ought to be understood, and we will explain the objections of the adversaries. Christ, in the last chapter of Luke 24, 47, commands that repentance and remission of sins should be preached in His name. For the Gospel convicts all men that they are under sin, that they all are subject to eternal wrath and death, and offers for Christ's sake remission of sin and justification, which is received by faith. The preaching of repentance, which accuses us, terrifies consciences with true and grave terrors. [For the preaching of repentance, or this declaration of the Gospel: Amend your lives! Repent! When it truly penetrates the heart, terrifies the conscience, and is no jest, but a great terror, in which the conscience feels its misery and sin and the wrath of God.] In these, hearts ought again to receive consolation. This happens if they believe the promise of Christ, that for His sake we have remission of sins. This faith, encouraging and consoling in these fears, receives remission of sins, justifies and quickens. For this consolation is a new and spiritual life [a new birth and a new life]. These things are plain and clear, and can be understood by the pious, and have testimonies of the Church [as is to be seen in the conversion of Paul and Augustine]. The adversaries nowhere can say how the Holy Ghost is given. They imagine that the Sacraments confer the Holy Ghost _ex opere operato_, without a good emotion in the recipient, as though, indeed, the gift of the Holy Ghost were an idle matter.