It's a comforting thought; if we work hard enough at being good, good things will come to us. And the bad people? Most of us are more than happy to believe they'll have rotten luck.
This concept has infiltrated the Christian world. As said by author Jeff Petherick, "... we talk like Christians but live like Hindus."
We reap what we sow in the physical world, but what about in the spiritual world? The truth is, God's grace is limitless. His love is unconditional. Karma is all about limits and conditions.
Christ's sacrifice on the cross and God's forgiveness saves us from the eternal consequences of our actions. That's grace. Sounds like the opposite of karma, huh?
For it is by grace you have been saved, through faith—and this is not from yourselves, it is the gift of God— not by works, so that no one can boast. Ephesians 2:8-9