This topic came up during one of our Bible meetings.
Do not judge, so that you may not be judged. For the judgment you give will be the judgment you get, and the measure you give will be the measure you get.
Matthew 7:1-2
For if you forgive others their trespasses, your heavenly Father will also forgive you, but if you do not forgive others, neither will your Father forgive your trespasses.
Matthew 6:14-15
I think the word "karma" encompasses many teachings in the Bible (some were mentioned in this thread) where you Reap what you Sow as a few other members mentioned.
A very wonderful realization is how forgiving others lends great peace to any believer. I believe it is the result of knowing we are forgiven. This has moved me to revue any and all whom I believe have possibly sinned against me. There are not many who have it seems but some of them were in need of true forgiveness.
You post is a wonderful lesson and meditation for any serious minded believers to meditate upon. Thank you and may you always be blessed.