Who can tell the misery that unbelief has brought on the world? Unbelief made Eve eat the forbidden fruit – she doubted the truth of God's word: “You will surely die.” Unbelief made the old world reject Noah's warning, and so perish in their sin. Unbelief kept Israel in the wilderness – it was the barricade that kept them from entering the Promised Land. Unbelief made the Jews crucify the Lord of glory – they did not believe the voice of Moses and the prophets, even though they were read to them every day. And unbelief is the reigning sin of man’s heart down to this very hour – unbelief in God’s promises – unbelief in God's wrath and discipline – unbelief in our own sinfulness – unbelief in our own danger – unbelief in everything that runs counter to the pride and worldliness of our evil hearts.