Monergism

Alas! it is an infinite righteousness that must satisfy for our sins, for it is an infinite God that is offended by us. If ever your sin be pardoned, it is infinite mercy that must pardon it; if ever you be reconciled to God, it is infinite merit must do it; if ever your heart be changed, and your soul renewed, it is infinite power must effect it; and if ever your soul escape hell, and be saved at last, it is infinite grace must save it.
Matthew Mead

Well can I remember the manner in which I learned the doctrines of grace in a single instant. ... I can recall the very day and hour when first I received those truths in my own soul when they were, as John Bunyan says, burnt into my heart as with a hot iron, and I can recollect how I felt that I had grown on a sudden from a babe into a man that had made progress in Scriptural knowledge, through having found, once for all, the clue to the truth of God.
Charles Spurgeon