But the rabbis point out four things about Noah. Narratively, Noah introduces the following to humanity:
1. Planting – he plants a vineyard.
2. Drunkenness – he shames himself with wine.
3. Curses – he curses his grandson.
4. Slavery – he condemns his grandson's house to slavery.
We tend to leave out the Genesis 9 parts of Noah's life when we teach Sunday School to little children, but there they are in glaring detail.
There's obviously nothing wrong with planting, but Noah's other 3 actions seem quite disastrous.
From Genesis 5 to 8, we see a man who obeys God; his heart appears inclined towards God.
But in Genesis 9, we have a different picture. I can't help but see an angry, bitter man who yells at his grandchildren, drowning himself in wine to cope with the tragedy of the flood.
It's a tragic end. But God uses him.