God warned Noah that in seven days there would be rain for forty days and nights that would cause a flood wiping out everything on earth. God gave an important order for Noah to take 7 pairs of animals to keep their kind all over the earth and still living. On the Seventh day that God said the rain would start Noah and his family made their way up to the ark. The rain came as God said it would. Every single thing that roamed the earth was wiped out. Except those in the ark. This story teaches you to trust God because what he says will happen will happen
"Then the Lord said to Noah: God into the ark [ ...] Of every clean animal, take with you seven pairs[...] and so I will wipe out from the face of the earth every being that I have made.
"On that day all the fountains of the great abyss burst forth, and the floodgates of the sky were opened. For forty days and forty nights heavy rain poured down on the earth" (Gn:11-12)
The waters swelled and increased greatly on the earth, but the ark floated on the surface of the waters...Everything on the dry land with the breath of life in its nostrils died. The lord wiped out every being on earth..." (Gn 7:18-23)
Have trust in God what he says will happen will happen.