Jesus replied, “Even if I testify about Myself, My testimony is valid, because I know where I came from and where I am going. But you do not know where I came from or where I am going.
14. Though I testify concerning myself. Christ replies, that his testimony possesses sufficient credit and authority, because he is not a private person belonging to the great body of men, but holds a very different station. For when he says, that he knoweth whence he came, and whither he goeth, he thus excludes himself from the ordinary rank of men.
The rest of the chapter is taken up with debates between Christ and contradicting sinners, who cavilled at the most gracious words that proceeded out of his mouth. It is not certain whether these disputes were the same day that the adulteress was discharged; it is probable they were, for the evangelist mentions no other day, and takes notice (Joh 8:2) how early Christ began that day's work.
Commenting on John 8:12-20
And yet if I judge, my judgment is true,.... Because he saw not as man did, nor looked unto, and judged according to the outward appearance of things; but looked into the heart, and knew what was in it, being the searcher and trier of it; to whom all things are naked and open, and therefore cannot be deceived or imposed upon; his judgment must...