So? That's no evidence that you understand it. The Greeks knew Greek better than you and most of them held on to their own righteousness.
It would absolutely be futile, because your previous use of the term is the evidence that you don't know.
Righteousness is dikeosune. It's also translated as justice. It's the expected standard of conduct by whatever or whoever sets the standard.
God's dikeosune is His own attributes and character; which means His own action and conduct is Him BEING to DO.
We don't have the inherent "being" of God, so any standard of conduct we prescribe for ourselves is self-righteousness. This is also the practical and functional definition for hamartia (sin). A self-determined standard of conduct.
Self-righteousness is someone thinking and doing according to their own prosopon (person) rather than thinking and doing according to the prosopon (person) of Christ.
I'm sure that was futile, because you already have your own understanding that isn't exegetical from scripture, but is your own standard of thinking and doing.
Oops. That's the very definition of self-righteousness.
I had no idea before recently that MADers were like "this". Very enlightening. I thought it was mostly the Catholics, but you guys are "out there".