John 15:27 KJV
And ye also shall bear witness, because ye have been with me from the beginning.
John 15:27, King James Version
In context
26 But when the Comforter is come, whom I will send unto you from the Father, even the Spirit of truth, which proceedeth from the Father, he shall testify of me:
27 And ye also shall bear witness, because ye have been with me from the beginning.