"30 “I can do nothing on my own. As I hear, I judge, and my judgement is just, because I seek not my own will but the will of him who sent me. 31 If I alone bear witness about myself, my testimony is not deemed true. 32 There is another who bears witness about me, and I know that the testimony that he bears about me is true. 33 You sent to John, and he has borne witness to the truth. 34 Not that the testimony that I receive is from man, but I say these things so that you may be saved. 35 He was a burning and shining lamp, and you were willing to rejoice for a while in his light. 36 But the testimony that I have is greater than that of John. For the works that the Father has given me to accomplish, the very works that I am doing, bear witness about me that the Father has sent me. 37 And the Father who sent me has himself borne witness about me. His voice you have never heard, his form you have never seen, 38 and you do not have his word abiding in you, for you do not believe the one whom he has sent. 39 You search the Scriptures because you think that in them you have eternal life; and it is they that bear witness about me,40 yet you refuse to come to me that you may have life. 41 I do not receive glory from people. 42 But I know that you do not have the love of God within you. 43 I have come in my Father's name, and you do not receive me. If another comes in his own name, you will receive him. 44 How can you believe, when you receive glory from one another and do not seek the glory that comes from the only God? 45 Do not think that I will accuse you to the Father. There is one who accuses you: Moses, on whom you have set your hope. 46 For if you believed Moses, you would believe me; for he wrote of me. 47 But if you do not believe his writings, how will you believe my words?”"
John 5:30-47
The third witness to Christ mentioned in these verses is that of the Scriptures themselves (39). Christ makes a truly astonishing claim here. The reference He makes is to the Old Testament, not merely to the specifically Messianic passages, but to the Old Testament as a whole. They all point to Him. He is what the Old Testament is about, from Genesis to Malachi; He is the subject matter throughout. Jesus' point in making this claim is that a right understanding of Moses must surely have led them to believe in Him, for this was the whole point of Moses' writings, 'A prophet shall the Lord your God raise up unto you, like unto me; him shall ye hear'. But they refused the witness of the Scriptures to Him. This is borne out in apostolic preaching, the burden of which was, quite simply, to show that Jesus was the fulfilment of Old Testament prophecy. To refuse such testimony, therefore, is to be without excuse.
The final witness Jesus mentions is that of God Himself (37). Peter tells us (Acts 2:22), that Jesus was 'a man approved of God', and Paul (Romans 1:4) that He was 'declared to be the Son of God with power by the resurrection from the dead'. At His baptism and on the Mount of Transfiguration, God bore witness, 'This is My beloved Son'. The point Jesus makes is that when witness is thus borne to Him and men refuse it, the witness itself is their condemnation. He Himself will not require to accuse them, the witness itself - 'even Moses', 45 - will do so. How solemnising: Every sermon a man has heard and not heeded will add accusation against him on the Day of Judgment. Well might Jesus say to us all, 'Take heed how ye hear'!