Exodus 4:8

⁶And the Lord said again to him, Put thy hand into thy bosom; and he put his hand into his bosom, and brought his hand out of his bosom, and his hand became as snow.

⁷And he said again, Put thy hand into thy bosom; and he put his hand into his bosom, and brought his hand out of his bosom, and it was again restored to the complexion of his other flesh.

— Exodus 4:8 —

⁹And it shall come to pass if they will not believe thee for these two signs, and will not hearken to thy voice, that thou shalt take of the water of the river and pour it upon the dry land, and the water which thou shalt take from the river shall be blood upon the dry land.

¹⁰And Moses said to the Lord, I pray, Lord, I have not been sufficient in former times, neither from the time that thou hast begun to speak to thy servant: I am weak in speech, and slow tongued.