Dear Doug ethics writing ignment?

so i have to write this letter to Doug and he asking if i beleive there is a universal standard of right and wrong. hes also asking if his friends idea of karma is right... his friend says that if our "good" deeds dont outweigh the bad, we could come back as a toad or something. Doug also wants to know what Christiansen really teaches about ethics. im a Christian so i need to answer all of these questions in a Christians view and well i personally cant really answer these questions and i need help.