Conversion and Salvation are of God

 The fact, that conversion and salvation are of God, is an humbling truth. It is because of its humbling character that men do not like it. To be told that God must save me if I am saved, and that I am in his hand, as clay is in the hands of the potter, "I do not like it," saith one. Well, I thought you would not; whoever dreamed you would? If you had liked it, perhaps it had not been true; your not liking it is an indirect evidence of its truthfulness. To be told that "he must work all my works in me," who can bring me so low as that? Where is boasting then! It is excluded. By what law? the law of works? No, but by the law of grace. Grace puts its hand on their boasting mouth, and shuts it once for all; and then it takes its hand off from the mouth, and that mouth now does not fear to speak to man, though it trembles at the very thought of taking any honour and glory from God.

- CH Spurgeon
High Doctrine A Sermon (No. 318)