Genesis 7:1 And the Lord said unto Noah, Come thou and all thy house into the ark; for thee have I seen righteous before me in this generation. 4 For yet seven days, and I will cause it to rain upon the earth forty days and forty nights; and every living substance that I have made will I destroy from off the face of the earth.
[Patriarchs & Prophets pp 98>99] For seven days after Noah and his family entered the ark, there appeared no sign of the coming storm. During this period their faith was tested. It was a time of triumph to the world without. The apparent delay confirmed them in the belief that Noah's message was a delusion, and that the Flood would never come. Notwithstanding the solemn scenes which they had witnessed—the beasts and birds entering the ark, and the angel of God closing the door—they still continued their sport and revelry, even making a jest of these signal manifestations of God's power. They gathered in crowds about the ark, deriding its inmates with a daring violence which they had never ventured upon before.
But upon the eighth day dark clouds overspread the heavens. There followed the muttering of thunder and the flash of lightning. Soon large drops of rain began to fall. The world had never witnessed anything like this, and the hearts of men were struck with fear. All were secretly inquiring, “Can it be that Noah was in the right, and that the world is doomed to destruction?” Darker and darker grew the heavens, and faster came the falling rain. The beasts were roaming about in the wildest terror, and their discordant cries seemed to moan out their own destiny and the fate of man. Then “the fountains of the great deep” were “broken up, and the windows of heaven were opened.” Water appeared to come from the clouds in mighty cataracts.
Rivers broke away from their boundaries, and overflowed the valleys. Jets of water burst from the earth with indescribable force, throwing massive rocks hundreds of feet into the air, and these, in falling, buried themselves deep in the ground. The people first beheld the destruction of the works of their own hands. Their splendid buildings, and the beautiful gardens and groves where they had placed their idols, were destroyed by lightning from heaven, and the ruins were scattered far and wide. The altars on which human sacrifices had been offered were torn down, and the worshipers were made to tremble at the power of the living God, and to know that it was their corruption and idolatry which had called down their destruction.
2nd Peter 3:3 Knowing this first, that there shall come in the last days scoffers, walking after their own lusts, 4 And saying, Where is the promise of his coming? for since the fathers fell asleep, all things continue as they were from the beginning of the creation. 5 For this they willingly are ignorant of, that by the word of God the heavens were of old, and the earth standing out of the water and in the water: 6 Whereby the world that then was, being overflowed with water, perished.
May God add His blessing to the study of His word. "Good night" and God bless!