John 5:34

But I receive not testimony from man [only] - I have no need of John's testimony: the works that I do bear sufficient testimony to me, John 5:36.

But these things I say, etc. - You believed John to be a prophet - a prophet cannot lie: he bore testimony that I am the Lamb of God, that beareth away the sin of the world, John 1:29; therefore, that ye may be saved by believing in me as such, I have appealed to John's testimony.

I receive not testimony from men - I do not depend for proof of my Messiahship on the testimony of men, nor do I pride myself on the commendations or flattery of men.

But these things ... - "This testimony of John I adduce that you might be convinced. It was evidence of your own seeking. It was clear, full, explicited You 'sent' to make inquiry, and he gave you a candid and satisfactory answer. Had you believed that, you would have believed in the Messiah and been saved." Men are often dissatisfied with the very evidence of the truth of religion which they sought, and on which they professed themselves willing to rely.

5:34 But I have no need to receive, &c. But these things - Concerning John, whom ye yourselves reverence, I say, that yemay be saved - So really and seriously did he will their salvation.Yet they were not saved. Most, if not all of them, died in their sins.