by Charles Hodge
…Although Protestants deny the merit of good works, and teach that salvation is entirely gratuitous, that the remission of sins, adoption into the family of God, and the gift of the Holy Spirit are granted to the believer, as well as admission into heaven, solely on the ground of the merits of the Lord Jesus Christ; they nevertheless teach that God does reward his people for their works. Having graciously promised for Christ’s sake to overlook the imperfection of their best services, they have the assurance founded on that promise that he who gives to a disciple even a cup of cold water in the name of a disciple, shall in no wise lose his reward. The Scriptures also teach that the happiness or blessedness of believers in a future life will be greater or less in proportion to their devotion to the service of Christ in this life. Those who love little, do little; and those who do little, enjoy less. What a man sows that shall he also reap. As the rewards of heaven are given on the ground of the merits of Christ, and as He has a right to do what He will with his own, there would be no injustice were the thief saved on the cross as highly exalted as the Apostle Paul. But the general drift of Scripture is in favor of the doctrine that a man shall reap what he sows; that God will reward every one according to, although not on account of his works. (Charles Hodge, Systematic Theology, vol. 3, pages 244-5)