"If it were by doing, then, saith Paul, “Grace is not grace,” seeing it is obtained by works" -John Bunyan

"To him that is athirst will I give; He doth not say, I will sell; but, I will give him the water of life freely (Rev 21:6). Now, if Christ doth give it, and that freely, then He doth not sell if for anything that is in the creature; but Christ doth give Himself, as also doth His Father, and that freely, not because there is anything in us, or done by us, that moves Him thereunto. If it were by doing, then, saith Paul, “Grace is not grace,” seeing it is obtained by works; but grace is grace, and that is the reason it is given to men without their works. And if it be by grace, that is, if it be a free gift from God, without anything foreseen as done, or to be done, by the creature, then it is not of works, which is clear; therefore it is grace, without the works of the law. But if you say, Nay, it is of something in the man done by him that moves God thereunto; then you must conclude that either grace is no grace, or else that works are grace and not works. Do but read with understanding (Rom 11:6)." -John Bunyan