If faith . . . is a sure persuasion of the truth of God which can neither lie nor deceive us and be neither vain nor false, those who have conceived this certainty surely expect likewise that God will accomplish his promises which, according to their conviction, cannot but be true. So that, in sum, hope is nothing else than the expectation of the things that faith has believed to be truly promised by God. Thus faith believes God to be truthful: Hope expects that he will show his veracity at the opportune time. Faith believes God to be our Father: Hope expects that he will always act as such toward us. Faith believes eternal life to be given us: Hope expects that it shall at some time be revealed. Faith is the foundation on which hope rests: Hope nourishes and maintains faith. For, just as no one can expect and hope anything from God, except he who will have first believed his promises, so, on the other hand, it is necessary that our feeble faith (lest it grow weary and fail) be sustained and kept by patient hope and expectation.

-- John Calvin