John 7:51

He showeth that they neither know the Law, nor do the Law; for if that Law commandeth to kill no man without first hearing him, and they before hearing were eager for this deed, they were transgressors of the Law. And because they said, "None of the rulers hath believed on him" (ver. 50), therefore the Evangelist informs us that Nicodemus was "one of them," to show that even rulers believed on Him; for although they showed not yet fitting boldness, still they were becoming attached to Christ. Observe how cautiously he rebukes them; he said not, "Ye desire to kill him, and condemn the man for a deceiver without proof"; but spake in a milder way, hindering their excessive violence, and their inconsiderate and murderous disposition. Wherefore he turns his discourse to the Law, saying, "Except it hear him carefully, and know what he doeth." So that not a bare "hearing," but "careful hearing" is required. For the meaning of, "know what he doeth," is, "what he intendeth," "on what account," "for what purpose," "whether for the subversion of the order of things and as an enemy."

He replies, Doth our law judge any man before it hear him, and know what he doeth? He thought that, if they would only hear Him patiently, they would be overcome, as the officers had been. But they preferred obstinately condemning Him, to knowing the truth. He calls the law of God, our law; because it was given to men.

What then? Shall one blame God for this? Away with the thought. This blame is theirs. And what other proof can a man bring of your not knowing the Law than your not obeying it? For when they had said, "Hath any of the rulers believed on him?" and, "These who know not the Law," Nicodemus in fair consequence upbraids them, saying, "Doth our law judge any man before it hear him?" He showeth that they neither know the Law, nor do the Law; for if that Law commandeth to kill no man without first hearing him, and they before hearing were eager for this deed, they were transgressors of the Law. And because they said, "None of the rulers hath believed on him", therefore the Evangelist informs us that Nicodemus was "one of them," to show that even rulers believed on Him; for although they showed not yet fitting boldness, still they were becoming attached to Christ.

"Nicodemus," however, "one of the Pharisees, who had come to the Lord by night,"-not indeed as being himself unbelieving, but timid; for therefore he came by night to the light, because he wished to be enlightened and feared to be known;-Nicodemus, I say, answered the Jews, "Doth our law judge a man before it hear him, and know what he doeth?" For they perversely wished to condemn before they examined. Nicodemus indeed knew, or rather believed, that if only they were willing to give Him a patient hearing, they would perhaps become like those who were sent to take Him, but preferred to believe.