John 15:27

Ye also shall bear witness.

The apostles were double witnesses. They had been with Christ "from the beginning" and knew all the facts. If he had been. deceiver they would have known it. If he was true they knew it. When he was risen they were witnesses of the fact. If they had never received the Comforter they could have been witnesses of the facts of his life, death and resurrection. But when the Holy Spirit was given, the dark things made plain, the Scriptures understood, power from on high sent upon them, and when they could speak with tongues and work miracles, then also the Holy Spirit in them bore witness. There was their witness as men, eleven competent witnesses to every fact, and then in addition there was the divine witness through them. They still testify, and added to this, there are those in whom Christ dwells by his Spirit. Every true Christian life is. witness to the living power of Christ. It must be kept clearly in mind that there is not the slightest intimation in the Scriptures of. testimony independent of those who have received the Spirit through the acceptance of Christ.