We come now to the second kind of peace, and that is peace of consolation, or peace of conscience. By the former—peace of reconciliation—the poor sinner is reconciled to God; by this, he becomes anima pacata sibi—a soul reconciled to itself. Since man fell out with God, he could never be truly friends with his own conscience. This second peace is so necessary, that he cannot taste the sweetness of the first, nor indeed of any other mercy, without it. This is to the soul what health is to the body, it sugars and sweetens all enjoyments. A suit, though of cloth of gold, sits not easy on a sick man's back. Nothing joyous to a distressed conscience.
Moses brought good news to the distressed Israelites in Egypt, but it is said, ‘They hearkened not unto Moses for anguish of spirit,’ Ex. 6:9. Hannah, she went up to the festival at Jerusalem with her husband, but it is said, ‘She wept, and did not eat,’ I Sam. 1:7. Truly, thus the wounded soul goes to the sermon, but doth not eat of the feast before it; hears many precious promises, but her ear is shut up from receiving the good news they bring. Tell one in trouble of conscience, here is your dear husband, [your] sweet children, will you not rejoice with them; alas, the throes such a one feels are so amazing, that he regards these things no more than Phinehas' wife in her sore travail did the woman that joyed her with the birth of a son. Set the most royal feast before such a soul that ever was on prince’s table, and, poor heart, it had rather go into a corner and weep, than sit and eat of those delicacies. ‘A wounded spirit who can bear?’ yea, who can cure?
Some diseases are, for their incurableness, called ludibrium medicorum—the physician’s shame and reproach. To be sure this spiritual trouble of an accusing conscience puts all the world to shame for their vain attempts. Many have attempted to conjure this evil spirit out of their own bosoms and others’; but have found it at last to leap upon them, and prevail against them, as the ‘evil spirit’ did by the sons of Sceva, Acts 19:14.
No, peace of conscience, I am now to show, is the blessing of the gospel, and only of the gospel. Conscience knows Jesus, and the gospel of Jesus; these and none else it will obey. Two particulars considered will demonstrate the truth of the point. First. If we consider what is the argument that pacifies and satisfies conscience. Second. If we consider what the power is and strength required to apply this argument so close and home to the conscience as to quiet and fully satisfy it. Both these will be found in the gospel, and only in the gospel.