JOSEPH IN MARYLAND ASKS: According to Christianity, is suicide a sin? THE GUY ANSWERS: The answer from Christian tradition is clearly yes. However, as with many topics these days the full answer is yes, but. Historic Christianity strongly opposes murder and, by extension, self-murder, “mercy killing,” and assisting others to kill themselves. All are regarded as basic violations of the Ten Commandments’ “thou shalt not kill,” and defiance against God’s sovereignty over life and death. Founders of Protestantism (Luther, Calvin)... Read more