A jeweler will display a ring or a fine piece of jewelry against a dark backdrop so that our eyes are automatically drawn to it. And that is what Noah was like against the dark backdrop of wickedness in his day. He was a rare jewel, a radiant light in a very dark place. The Bible tells us that "Noah found grace in the eyes of the Lord" (Genesis 6:8), which means that God extended grace toward him.
The Bible also tells us that "Noah walked with God." (verse 9). That is said of only two people in the Scriptures: Enoch and Noah. So what does it mean to walk with God? Amos 3:3 gives us insight into this: "Can two walk together, unless they are agreed?" The idea is to move in rhythm with someone. If you take a walk with someone, you have to keep pace with that person. When I walk with my grandchildren, for example, I can't walk at my normal speed. I slow down.
The idea of walking with God is that we are not running and dragging God along, and neither is God running and dragging us along. Rather, we are to get in rhythm with God. The objective is to get in synch with Him, not try to get Him in synch with us.
I remember a time when I went scuba diving and ended up using too much of my air. So I had to use the extra regulator hanging from the instructor's tank, and from that point on, I had to go wherever he went. I could either stay in rhythm with my instructor and live, or break free and die. So I stayed in rhythm with him.
That is the idea of walking with God. And Noah walked with God.