Fungi is correct. Karma is not a Christian (or Jewish) concept.
Your quotes are excellent and apt.
But these Biblical passages do not reflect karma.
Karma is based on past lives, as they believe, not what what is done in this, our one life.
Compare to the verse you posted:
2 Corinthians 5:10 - For we must all appear before the judgment seat of Christ; that every one may receive the things [done] in [his] body, according to that he hath done, whether [it be] good or bad.
Karma is the judgement. The belief is one’s current life is based on judgement of one’s previous incarnation.
Karma is cause and effect. That’s it. You do bad, you get bad. You do good, you get good.
Reincarnation is another concept entirely.
“Fungi is correct. Karma is not a Christian (or Jewish) concept.”
Only the word “Karma” isn’t Christian in origin. The concept is undoubtedly Christian.
Proverbs 11:31 Behold, the righteous shall be recompensed in the earth; much more the wicked and the sinner.
That people suffer consequences for being and practicing evil while still in their earthly life is largely accepted by many faiths and sets of beliefs except those that aim to glorify and tout evil and its advantages.