You wrote:
How do you explain the righteousness of Job, Zacharias, and Elizabeth prior to Jesus' death on the cross?I see prevenient grace as working solely by grace, and that there is not one thing good in us in Adam, such that if there is spiritual sight or a desire for righteousness, it is only traced back as an extension of God's grace in Christ. This would seem a fundamental Pauline concept, that all our righteousness is as filthy rags and the only goodness is what Christ may work in us. I think as a balance to this whole thread we should address the error of self-righteousness and religious works, which error Pelagius tended into, along with other things that minimize the power of every spiritually good thing coming to us only through faith in the work of the cross.
Job 1:1, (NASB)
1. There was a man in the land of Uz whose name was Job; and that man was blameless, upright, fearing God and turning away from evil.
Luke 1:5-6, (NASB)
5. In the days of Herod, king of Judea, there was a priest named Zacharias, of the division of Abijah; and he had a wife from the daughters of Aaron, and her name was Elizabeth. 6. They were both righteous in the sight of God, walking blamelessly in all the commandments and requirements of the Lord.
You mentioned the filthy rags passage in Romans but the "seeks" and "does" are present participles expressing continuous or repetitive action, in v. 11-12.
Romans 3:11-12 (NASB)
11. There is none who understands,
There is none who seeks for God;
12. All have turned aside, together they have become useless;
There is none who does good,
There is not even one.”
It seems to me, given the above scriptures, that Paul was making use of hyperbole.