Exodus 4:10; Exodus 5:14

Exodus 4:10

10 Then Moses said to the LORD , "Please, Lord , I have never been eloquent , neither recently nor in time past, nor since You have spoken to Your servant; for I am slow of speech and slow of tongue."

Exodus 5:14

14 Moreover, the foremen of the sons of Israel, whom Pharaoh's taskmasters had set over them, were beaten and were asked, "Why have you not completed your required amount either yesterday or today in making brick as previously?"