Most Christian denominations seem to say that if you do wrong, you need merely ask for Jesus's forgiveness, and everything's OK. This is a much easier way to go than the popular belief in Karma which is that bad things you do will turn into energy that will come back to get you later. There doesn't seem to be any way to escape Karma.
Although the original Karma is about being reborn, on a higher or lower plane, this people's Karma seems to have much greater currency. And so even Christians believe in it, much like many Christians also believe in Astrology although I would think that would be tantamount to heresy.
The Christian churches seem to be getting really lax on matters of dogma.