συμμαρτυρέω

For I testify unto every man that heareth the words of the prophecy of this book, If any man shall add unto these things, God shall add unto him the plagues that are written in this book:

Which shew the work of the law written in their hearts, their conscience also bearing witness, and their thoughts the mean while accusing or else excusing one another;)

The Spirit itself beareth witness with our spirit, that we are the children of God:

I say the truth in Christ, I lie not, my conscience also bearing me witness in the Holy Ghost,