Hebrews 8:12

All Scripture is divided into two Testaments. What preceded the advent and passion of Christ—that is, the law and the prophets—is called the Old [Testament]; but what was written after his resurrection is named the New Testament. The Jews make use of the Old, we of the New. Yet, they are not dissonant. The New Testament is the fulfilling of the Old, and in both there is the same testator, even Christ who suffered death for us and made us heirs of his everlasting kingdom.… When, therefore, we who were in time past as it were blind, and as it were shut up in the prison of folly, were sitting in darkness, ignorant of God and of the truth, we have been enlightened by him, who adopted us by his testament; and having freed us from cruel chains, and brought us out to the light of wisdom, he admitted us to the inheritance of his heavenly kingdom.

"And they shall not teach" (he says) "every man his neighbor, and every man his brother, saying, Know the Lord: for all shall know Me from the least to the greatest. For I will be merciful to their unrighteousness, and their sins and their iniquities will I remember no more." Behold also another sign. "From the least even to the greatest of them" (he says) "they shall know Me, and they shall not say, Know the Lord." When hath this been fulfilled save now? For our religion is manifest: but theirs, i.e. the Jews', was not manifest, but had been shut up in a corner. A covenant is then said to be "new," when it is different and shows some advantage over the old. Here he shows that God counts us worthy of greater and of spiritual privileges: for it is said "their sound went out into all the earth and their words unto the ends of the world." (Ps. xix. 5; Rom. x. 18.) That is the meaning of "they shall not say each man to his neighbor, Know the Lord." And again, "the earth shall be filled with the knowledge of the Lord as much water to cover the seas." (Isa. xi. 9.)

Washing us through baptism from the impurity of former sins, He no longer remembers them, as they have already been washed away.

For what is the meaning of John's being born to elderly parents? Was it not to indicate the earthly birth of the one who was soon to follow, since by bringing forward the hidden spiritual mysteries of the new covenant, he would teach that the …

411. – Then when he says, because I will be merciful to their iniquities, he states the third effect, which is the remission of guilt, which the Old Testament was unable to do: It is impossible that with the blood of oxen and goats sin …

This pardoning mercy is connected with all other spiritual mercies. Unpardoned sin prevents mercy, and pulls down judgments; but the pardon of sin prevents judgment, and opens a wide door to all spiritual blessings; it is the effect of that mercy that is from everlasting, and the earnest of that mercy that shall be to everlasting.

For I will be merciful to their unrighteousness,....

Sin being abolished, sinners obtain grace. I will be merciful--Greek, "propitious"; the Hebrew, "salach," is always used of God only in relation to men. and their iniquities--not found in Vulgate, Syriac, Coptic, and one oldest Greek manuscript; but most oldest manuscripts have the words (compare Heb 10:17). remember no more--Contrast the law, Heb 10:3.

For I will be merciful to their unrighteousness ... - That is, the blessing of “pardon” will be much more richly enjoyed under the new dispensation than it was under the old. This is the “fourth” circumstance adduced in which the new covenant will surpass the old. That was comparatively severe in its inflictions (see Heb 10:28); marked every offence with strictness, and employed the language of mercy much less frequently than that of justice. It was a system where law and justice reigned; not where mercy was the crowning and prevalent attribute. It was true that it contemplated pardon, and made arrangements for it; but it is still true that this is much more prominent in the new dispensation than in the old. It is there the leading idea. It is what separates it from all other systems. The entire arrangement is one for the pardon of sin in a manner consistent with the claims of law and justice, and it bestows the benefit of forgiveness in the most ample and perfect manner on all who are interested in the plan. In fact, the uniqueness by which the gospel is distinguished from all other systems, ancient and modern, philosophic and moral, pagan and deistical, is that it is a system making provision for the forgiveness of sin, and actually bestowing pardon on the guilty. This is the center, the crown, the glory of the new dispensation. God is merciful to the unrighteousness of people and their sins are remembered no more. Will I remember no more - This is evidently spoken after the manner of men, and in accordance with human apprehension. It cannot mean literally that God forgets that people are sinners, but it means that he treats them as if this were forgotten. Their sins are not charged upon them, and they are no more punished than if they had passed entirely out of the recollection. […]