31 If I bear witness of myself, my witness is not true. 32 There is another that beareth witness of me; and I know that the witness which he witnesseth of me is true. (John 5:31-32 KJV)
William Burkitt’s Commentary
Our blessed Saviour having produced these five foregoing arguments, to prove his unity in essence, and his equality in power, with the Father, comes now at the end of the chapter, to produce several testimonies for the proof of it: and the first of them is, the testimony of God his Father: There is another that beareth witness of me whose witness is true. Now the Father had lately, at Christ’s baptism, by a voice from heaven, declared him to be his beloved Son, in whom he was well pleased; which illustrious testimony, given to Christ, they had not regarded.
Learn hence, That as Christ came into the world in obedience to his Father, and to bear witness of him, and his testimony concerning his Son is undoubtedly true, and to be depended and rested upon: for we make the Father a liar, if we do not depend upon the record which he hath given of his Son.