Humankind corrupted the earth with evil. God decided to destroy them. He told Noah to build an ark to be saved from the flood.
Genesis 6:5 - every inclination of the thoughts of his heart was only evil all the time
At this point, in a relatively small amount of time, man no longer called out for God. It was just Genesis chapter 4 when men just began to call out for God and at this time
Genesis 6:13 - God said to Noah, "I am going to put an end to all people"
God shared his plans with Noah even though they were very troubling. A deep relationship is where you share you plans and dreams (not in this case). God trusted Noah. Noah trusted God even more (as he should). That mutual trust helped save mankind and allow us to live today.
Genesis 6:22 - Noah did everything just as God commanded him
After being 500 years old or so, Noah still did everything God commanded him to do. We can not imagine the pressure and persecution Noah must have gone through to build a boat in the middle of the dessert. Still he did not waiver. His complete faith was with God and trusted every word God spoke to him. We have trouble with just a small amount of faith that required to live our lives.
Increase my faith, Lord! I see Noah's faith to build an ark and I struggle to have faith today.The struggles I face today are not even a speck compared to Noah's troubles. Noah had great faith because he trusted God and what he said. That is what I need to do.