Then said some of them of Jerusalem, Is not this he, whom they seek to kill?
All Commentaries on John 7:25 Go To John 7
Hilary of Poitiers
AD 368
Everyman, ever born in the flesh, is in a certain sense from God. How then could He say that they were ignorant who He was, and whence He was.? Because our Lord is here referring to His own peculiar birth from God, which they were ignorant of, because they did not know that Hewas the Son of God. His very saying then that they did not know whence He was, was telling them whence He was. If they, did not know whence He was, He could not be from nothing; for then there would be no whence to be ignorant of. He must therefore be from God. And then not knowing whence He is, was the reason that they did not know who He is. He does not know the Son who does not know His birth from the Father.
I ask however does the being from Him express a work of creation, or a birth by generation? If a work of creation, then every thing which is created is from Him. And how then does not all creation know the Father, if the Son knows Him, because He is from Him? But if the knowledge of the Father is peculiar to Him, as being from Him, then the being from Him is peculiar to Him also; i.e. the being the true Son of God by nature. So you have then a peculiar knowledge springing from a peculiar generation. To prevent however ever any heresy applying the being from Him, to the time of His advent He adds, And He has sent Me; thus preserving, the order of the Gospel sacrament; first announcing Himself born, and then sent.