8 And it shall come to pass, if they will not believe thee, neither hearken to the voice of the first sign, that they will believe the voice of the latter sign.
9 And it shall come to pass, if they will not believe also these two signs, neither hearken unto thy voice, that thou shalt take of the water of the river and pour it upon the dry land; and the water which thou takest out of the river shall become blood upon the dry land.
10 Then Moses said unto the Lord, O my Lord, I am not eloquent, neither up until now, nor since thou hast spoken unto thy slave; but I am slow of speech and of a slow tongue.
11 And the Lord said unto him, Who has made man’s mouth? Or who makes the dumb or the deaf or the seeing or the blind? Am not I the Lord?
12 Now therefore go and I will be with thy mouth and teach thee what thou shalt say.
13 And he said, O my Lord, send, I pray thee, by the hand of him whom thou wilt send.
14 Then the anger of the Lord was kindled against Moses, and he said, Do I not know thy brother Aaron, the Levite, and that he can speak well? And also, behold, he comes forth to meet thee, and when he sees thee, he will be glad in his heart.