Scripture documents several instances of the righteous influence of unrighteous leaders1,2,3,4,5,6,7. In most cases, we don’t know of the personal influence they may have had on the leader1,3,4,5,6,7 but we are told of the policy influence1,2,3,4,5,6. In at least one case, we can see the influence and effect they had on the leader personally2.
In all cases, we confidently know though Scripture’s testimony of the righteousness of the influencer. God was at work1,2,3,5 through the pure hearts of Joseph, Daniel, Ezra, Esther, Nehemiah and Paul.
Conversely, we don’t know the spiritual condition and state of those they influenced. Did they turn their hearts in the end? We don’t know, and like today, we won’t know until that Day. But, it’s not implausible to think that the great Nebuchadnezzar himself awaits us in heaven2. Wouldn’t that be something?