"THE LORD OUR RIGHTEOUSNESS." - Jer. 23:6
Jer. 51:10 The LORD hath brought forth our righteousness: come, and let us declare in Zion the work of the LORD our God.
Eph. 2:8 For by grace are ye saved through faith; and that not of yourselves: it is the gift of God:
Eph. 2:9 Not of works, lest any man should boast.
Eph. 2:10 For we are his workmanship, created in Christ Jesus unto good works, which God hath before ordained that we should walk in them.
Tit. 3:5 Not by works of righteousness which we have done, but according to his mercy he saved us, by the washing of regeneration, and renewing of the Holy Ghost;
His work, not ours. He is simply carrying out His promise in Jer. 31:33. He would do it. Soon, it is to be said once more, "It is finished", even as He shook the earth once, now again and also Heaven.
While not saved by works, we are rewarded by them:
Rev. 22:12 And, behold, I come quickly; and my reward is with me, to give every man according as his work shall be.