Clothed and Filled With Righteousness
No one has anything in him out of which righteousness can be made. Thus the righteousness of God is put, literally, into and upon all that believe. Then they are both clothed with righteousness, and filled with it, according to the Scripture. In fact, they then become "the righteousness of God" in Christ. And how is this accomplished? God declares His righteousness upon the one who believes. To declare is to speak.