Exodus 4:8

8 And if they will not believe thee, nor hearken to the voice of the first sign, they will believe thee of the voice of the second sign.

Exodus 4:8 Meaning and Commentary

Exodus 4:8

And it shall come to pass, if they will not believe thee
Will not give credit to the commission he had from God, but question the truth of it: neither hearken to the voice of the first sign;
which miracle wrought, spoke plain enough that he that wrought it, or for whose sake it was wrought, must be one come from God, or such a miracle would never be wrought by him or for him; but should any of the Israelites be still incredulous, it is supposed, that they will believe the voice of the latter sign;
which had a voice in it commanding belief that he was a messenger of God; the first sign respects his rod, the other his hand.

Exodus 4:8 In-Context

6 And the Lord said again to him, Put thine 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.
7 And 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 flesh.
8 And if they will not believe thee, nor hearken to the voice of the first sign, they will believe thee of the voice of the second sign.
9 And 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.
10 And 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.

The Brenton translation of the Septuagint is in the public domain.