Charles Ellicott Commentary John 8:46

"Which of you convicteth me of sin? If I say truth, why do ye not believe me?" — John 8:46 (ASV)

Which of you convinceth me of sin?—He appeals to their knowledge of His sinless life, as in John 8:29. He asserted His own knowledge of entire conformity to His Father’s will. It is an appeal that spotless purity alone could make, and is His own testimony uttered in the dignity of certain knowledge. .

If I say the truth, why do you not believe me?—We may suppose that the last question was probably followed by a pause, during which anyone might have answered the challenge. No one of all who had watched Him in Galilee and Judea dared utter a syllable. Their silence is the seal to His own testimony. But if He is thought of by these as without sin, they cannot think of His words as untrue. They admit, then, that He speaks the truth, and yet they do not believe. On the absolute sinlessness of Christ, compare to 1 John 3:5; 2 Corinthians 5:21; 1 Peter 1:19; 1 Peter 1:22.