'Credence' in the Bible

And Moses answereth and saith, 'And, if they do not give credence to me, nor hearken to my voice, and say, Jehovah hath not appeared unto thee?'

-- and it hath come to pass, if they do not give credence to thee, and hearken not to the voice of the first sign, that they have given credence to the voice of the latter sign.

And it hath come to pass, if they do not give credence even to these two signs, nor hearken to thy voice, that thou hast taken of the waters of the River, and hast poured on the dry land, and the waters which thou takest from the River have been, yea, they have become -- blood on the dry land.'