The seven deadly sins (sins serious enough to kill one's soul) are currently anger, envy, pride, sloth, lust, gluttony, and covetousness. They haven't always been so, however. Originally, there were eight deadly sins (as proposed by Avagrius of Pontus). The eight (in order of increasing severity) were gluttony, lust, avarice, sadness, anger, apathy, vainglory, and pride. Gregory the Great later decided that vainglory and pride were too much alike to be counted separately and combined them. He added envy. Later still, the Roman Catholic Church decided sadness wasn't a sin, and added sloth. Somewhere along the way, apathy was dropped as well