Jeremiah 23:6 - Matthew Poole's English Annotations on the Holy Bible

During the reign and kingdom of the Messias (whose kingdom is an everlasting kingdom) the people of God, typified by Judah and Israel, the true Israel of God, those that are Jews indeed, shall be saved with a spiritual salvation; for he was therefore called Jesus, because he was to save his people from their sins, Matthew 1:21, and God will be a special protection to them. The name wherewith this Branch shall be called shall be, The Lord our Righteousness. Some have applied this to the people, as if the people should be so called, or should say, The Lord hath dealt graciously with us; or, In the Lord we have righteousness. But this will appear but the new invention of some who either cannot or will not understand how Christ should be his people's righteousness, those who consider not that it is the Branch which was before spoken of, and that the word people is not to be found going before; there is indeed a mention of Judah and Israel, but surely they were not to be other men's righteousness, and if that had been the prophet's meaning, he would not have said, The Lord our, but the Lord their righteousness. Nor is the only place where Christ is called our righteouness, 1 Corinthians 1:30. This place is an eminent proof of the Godhead of Christ, he is here called Jehovah; and what is proper to God alone, viz. to justify, is here applied to Christ. The prophet saith Christ shall be so called, that is, by his people, who should believe in him and trust in him alone for that righteousness wherein they should at the last day stand before God: thus he was to bring in everlasting righteousness, Daniel 9:24. He, who knew no sin, was made sin (that is, a sacrifice for sin) for us, that we might be-made the righteousness of God in him.