The substance of this covenant is noteworthy. It is concerned solely with physical nature. There is nothing spiritual or 'religious' about it. There are to be no more universal deluges. That is all which it guarantees. But consider how important such an assurance was in two aspects. Note the solemn light which it threw on the past. It taught that the flood was an exception in the divine government, which should stand unrepeated for ever, in its dread pre-eminence testifying how awful it was as a judicial act, and how outrageous had been the guilt which it drowned out of existence and sight. A wholesome terror at the unexampled act of judgment would fill the hearts of the little group which now represented mankind. Consider the effect of the covenant in encouraging hope. We have said that the one thing needful for Noah was some assurance that the new order would last. He was like a man who has just been rescued from an earthquake or a volcanic eruption. The ground seems to reel beneath him. Old habitudes have been curled up like leaves in the fire. Is there to be any fixity, any ground for continuous action, or for labour for a moment beyond the present? Is it worth while to plant or sow? Men who have lived through national tempests or domestic crashes know how much they need to be steadied afterwards by some reasonable assurance of comparative continuity. And these men, in the childhood of the race, would need it much. So they were sent out to till the earth, and to begin again strenuous lives, with this covenant to keep them from falling into a hand-to-mouth style of life, which would have brought them down to barbarism. We all need the same kind of assurance; and then, when we get it, such is the weakness of humanity, we are tempted to think that continuity means eternity, and that, because probably to-morrow shall be as this day, there will never come a to-morrow which shall be quite unlike to-day. The crust of cooled earth, on which we walk, is thick enough to bear man and all his works, but there comes a time when it will crack. The world will not be flooded again, but we forget, what Noah did not know, that it will be burned.