"Ye" is often used in olden poetic and religious literature. It's used when referring to more than one person. "You"=singular and "ye" = plural. Eg, the King James version of the Christian Bible makes use of the word. "Wherefore, if God so clothe the grass of the field,which to day is, and to morrow is cast into the oven,shall he not much more clothe you, O ye of little faith?".