And others have a _dark and hardened conscience_. They are so deceived, that they “cry peace and safety, when destruction is at the door.” They are “past feeling, having the conscience seared as with a hot iron.” They have sold themselves to work evil; to eat sin like bread, and drink iniquity like water. They have bribed or gagged the recorder and accuser within them. They will betray the just cause of the righteous, and slay the messengers of salvation, and think that they are doing God service. John the Baptist is beheaded, that Herod may keep his oath of honor. A dead fish cannot swim against the stream; but if the king’s conscience had been alive and faithful, he would have said:—“Girl, I promised to give thee thy request, even to the half of my kingdom; but thou hast requested too much; for the head of Messiah’s herald is more valuable than my whole kingdom, and all the kingdoms of the world!” But he had not the fear of God before his eyes, and the proud fool sent and beheaded the prophet in his cell. A _good conscience_ is a faithful conscience, a lively conscience, a peaceful conscience, a conscience void of offence toward God and man, resting in the shadow of the cross, and assured of an interest in its infinite merit. It is the victory of faith unfeigned, working by love, and purifying the heart. It is always found in the neighborhood and society of its brethren; “a broken heart, and a contrite spirit;” an intense hatred of sin, and an ardent love of holiness; a spirit of fervent prayer and supplication, and a life of scrupulous integrity and charity; and above all, an humble confidence in the mercy of God, through the mediation of Christ. These constitute the brotherhood of Christianity; and wherever they abound, a good conscience is never lacking. They are its very element and life; its food, its sunshine, and its vital air. Conscience was a faithful recorder and judge under the law; and notwithstanding the revolution which has taken place, introducing a new constitution, and a new administration, Conscience still retains his office; and when “purged from dead works to serve the living God,” is appropriately called a _good conscience_. II. The means of this purification is “the blood of Christ, who through the Eternal Spirit offered himself without spot to God.” Could we take in, at a single view, all the bearings of “the blood of Christ,” as exhibited in the gospel, what an astonishing light would it cast upon the condition of man; the character of God; the nature and requirements of his law; the dreadful consequences of sin; the wondrous expiation of the cross; the reconciliation of Heaven and earth; the blessed union of the believer with God in Christ, as a just God and a Savior; and the whole scheme of our justification, sanctification, and redemption, through free, sovereign, infinite, and unspeakable grace!