Who slew Goliath? Who did all those wonderful deeds which thou readest in the bible? Who delivered the Israelites evermore from thraldom and bondage, as soon as they repented and turned to God? Faith verily, and God's truth, and the trust in the promises which he had made.

When the children of Israel were ready to despair, for the greatness and the multitude of the giants, Moses comforted them ever, saying, Remember what your Lord God hath done for you in Egypt, his wonderful plagues, his miracles, his wonders, his mighty hand, his stretched out arm, and what he hath done for you hitherto. He shall destroy them; he shall take their hearts from them, and make them fear and flee before you. He shall storm them, and stir up a tempest among them, and scatter them, and bring them to nought. He hath sworn; he is true; he will fulfil the promises that he hath made unto Abraham, Isaac, and Jacob. This is written for our learning: for verily he is a true God; and is our God as well as theirs; and his promises are with us, as well as with them; and he present with us, as well as with them. If we ask, we shall obtain; if we knock, he will open; if we seek, we shall find; if we thirst, his truth shall fulfil our lust. Christ is with us until the world's end. Let his little flock be bold therefore. For if God be on our side, what matters maketh it who be against us, be they bishops, cardinals, popes, or whatever names they will?

Mark this also, if God send thee to the sea, and promise to go with thee, and to bring thee safe to land, he will raise up a tempest against thee, to prove whether thou wilt abide by his word, and that thou mayest feel thy faith, and perceive his goodness. For if it were always fair weather, and thou never brought into such jeopardy, whence his mercy only delivered thee, thy faith should be but a presumption, and thou shouldest be ever unthankful to God and merciless to thy neighbour.
~ William Tyndale