Calvin's concept of predestination:
Total deprivation - Humans are too sinful to go to heaven.
Unconditional election – God ‘tweaks’ some hearts so they can go to heaven.
Limited atonement – Jesus' sacrifice is only available to some.
Irresistible grace - It is by grace alone that people are saved.
Perseverance of the Saints - God will sustain faith of a believer.
Only 166,000 people will be saved (Calvin is one of them).