Titus 3:5-7 King James Version (KJV)
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;
6 Which he shed on us abundantly through Jesus Christ our Saviour;
7 That being justified by his grace, we should be made heirs according to the hope of eternal life.
no one is proving anything. our righteousness is as filthy rags.
"...and this is his name whereby he shall be called, THE LORD OUR RIGHTEOUSNESS."