There is no inconsistency in saying that God rewards good works, provided we understand that nevertheless men obtain eternal life gratuitously.
John CalvinBut prosperity, and the happy issue of events, ought also to be attributed to his grace, in order that he may always receive the praise which he deserves, that of being a merciful Father, and an impartial Judge. About the close of the psalm, he inveighs against those ungodly men who will not acknowledge God's hand, amid such palpable demonstrations of his providence.
John Calvin