Sainthood is the state of being a holy person who goes to heaven after death. In the Catholic church, people can achieve sainthood2020欧洲杯时间 after death. People like Mother Theresa that is, not just any chump.
You can use this noun in the religious sense to describe the status of Catholic saints: "Mother Theresa officially achieved sainthood almost twenty years after her death." You can also use sainthood to talk about less-saintly people: "My sister pretends like she's headed for sainthood2020欧洲杯时间, but then she sticks her tongue out at me when my parents aren't looking!"