Exodus 6:9-12

9Moses told the Lord's message to the Israelites. But they refused to listen to him. They were very weak and tired, because their Egyptian masters were so cruel to them.

10Then the Lord said to Moses,

11‘Go and speak to Pharaoh, king of Egypt. Tell him that he must let the Israelites go out of his country.’

12But Moses said to the Lord, ‘Look! Even the Israelites have not listened to me. So Pharaoh certainly will not listen to me. You know that I do not speak well.’