Notwithstanding the solemn exhibition they [the antediluvians] had witnessed of God's power—of the unnatural occurrence of the beasts’ leaving the forests and fields, and going into the ark, and the angel of God clothed with brightness, and terrible in majesty, descending from heaven and closing the door; yet they hardened their hearts, and continued to revel and sport over the signal manifestations of divine power. But upon the eighth day the heavens gathered blackness.... The rain descended from the clouds above them. This was something they had never witnessed.... The storm increased in violence until water seemed to come from heaven like mighty cataracts.... Jets of water would burst up from the earth with indescribable force, throwing massive rocks hundreds of feet into the air, and then they would bury themselves deep in the earth.... TA 70.1
The violence of the storm increased, and there were mingled with the warring of the elements the wailings of the people who had despised the authority of God. Trees, buildings, rocks, and earth were hurled in every direction. The terror of man and beast was beyond description. And even Satan himself, who was compelled to be amid the warring elements, feared for his own existence.... TA 70.2
Angels that excel in strength guided the ark and preserved it from harm. Every moment during that frightful storm of forty days and forty nights the preservation of the ark was a miracle of almighty power.—The Spirit of Prophecy 1:73, 75. TA 70.3