Knowability of God
Man cannot know himself without knowing God. And God cannot be known unless God freely reveals Himself to man. God has done this in the gospel of Jesus Christ.
"There is within the human mind, and indeed by natural instinct, an awareness of divinity (sensus divinitatis) . . . God himself has implanted in all men a certain understanding of his divine majesty" (Institutes, 1. 3. 1.).1 "Not only," writes Calvin has God, "sowed in men's minds that seed of religion of which we have spoken but revealed himself and daily discloses himself in the whole workmanship of the universe. As a consequence, men cannot open their eyes without being compelled to see him" (1. 5. 1.). " - John Calvin