The five chief points of Calvinism are:
(1) Predestination, or particular election.
(2) Irresistible grace.
(3) Original sin, or the total depravity of the natural man, which renders it morally impossible to believe and turn to God of his own free will.
(4) Particular redemption.
(5) Final perseverance of the saints.
Source: Dictionary of Phrase and Fable, E. Cobham Brewer, 1894