12.Who is it who also bore witness to us, speaking through the Prophets of Israel?

The Holy Spirit.

But this shall be the covenant that I will make with the house of Israel; After those days, saith the Lord, I will put my law in their inner parts, and write it in their hearts; and will be their God, and they shall be my people. And they shall teach no more every man his neighbour, and every man his brother, saying, Know the Lord: for they shall all know me, from the least of them unto the greatest of them, saith the Lord: for I will forgive their iniquity, and I will remember their sin no more. (Jeremiah 31:33,34)