Genesis 9:13

This may not mean that God put his rainbow in the cloud for the first time. Perhaps there had been rainbows before and Noah had seen them. But before this time the rainbow was not a sign. God told Noah that the rainbow would be a sign of his firm agreement with all people and animals. It was a firm agreement that God would not again destroy all people and animals by a flood.

Noah and his sons

v18 Noah’s sons who went out from the *ark were Shem, Ham and Japheth. Ham was the father of Canaan. v19 These three were Noah’s sons. The families of these sons became the inhabitants of the whole earth.

v20 Noah began to farm. He planted vines and he made wine. v21 He drank too much wine and therefore he slept. Then he lay in his tent and he was naked. v22 Ham, who was Canaan’s father, saw his naked father Noah. He went out of the tent. Then he told his two brothers what he had seen. v23 Then Shem and Japheth took a coat and they laid it on their shoulders. They backed into the tent. Then they covered their naked father with the coat. They turned their faces away. Therefore, they did not see their father while he was naked. v24 Noah woke from the effect of the wine. Then he knew what his youngest son had done to him.