John 17:25

"O righteous Father, the world hath not known Thee." What meaneth this? What connection hath it? He here showeth that no man knoweth God, save those only who have come to know the Son. And what He saith is of this kind: "I wished all to be so, yet they have not known Thee, although they had no complaint against Thee." For this is the meaning of, "O righteous Father." And here He seemeth to me to speak these words, as vexed that they would not know One so just and good. For since the Jews had said that they knew God, but that He knew Him not, at this He aimeth, saying, "For Thou lovedst Me before the foundation of the world"; thus putting together a defense against the accusations of the Jews. For how could He who had received glory, who was loved before the foundation of the world, who desired to have them as witnesses of that glory, how could He be opposed to the Father? "This then is not true which the Jews say, that they know Thee, and that I know Thee not; on the contrary, I know Thee, and they have not known Thee."

"And these have known that Thou hast sent Me." Seest thou that He alludeth to those, who said that He was not from God, and all is finally summed up to meet this argument?

"O righteous Father," He saith, "the world hath not known Thee." Just because Thou art righteous it hath not known Thee. It is as that world which has been predestined to condemnation really deserved, that it hath not known Him; while the world which He hath reconciled unto Himself through Christ hath known Him not of merit, but by grace. For what else is the knowing of Him, but eternal life which, while He undoubtedly withheld it from the condemned world, He bestowed on the reconciled. On that very account, therefore, the world hath not known Thee, because Thou art righteous, and hast rendered unto it according to its deserts, that it should not know Thee: while on the same account the reconciled world hath known Thee, because Thou art merciful, and, not for any merit of its own, but by grace, hast supplied it with the needed help to know Thee. And then there follows, "But I have known Thee." He is the Fountain of grace, who is by nature God, and, by grace ineffable, man also of the Holy Spirit and the Virgin: and then on His own behalf, because the grace of God is through Jesus Christ our Lord, He adds, "And these have known that Thou hast sent me." Such is the reconciled world. But it is because Thou hast sent me that they have known: by grace, therefore, have they known.

(Tr. cxi. 5) Or thus; What is to know Him, but eternal life, which He gave not to a condemned but to a reconciled world? For this reason the world hath not known Thee; because Thou art just, and hast punished them with this ignorance of Thee, in reward for their misdeeds. And for this reason the reconciled world knows Thee, because Thou art merciful, and hast vouchsafed this knowledge, not in consequence of their merits, but of thy grace. It follows: But I have known Thee. He is God the fountain of grace by nature, man of the Holy Ghost and Virgin by grace ineffable. Then because the grace of God is through Jesus Christ, He says, And they have known Me, i. e. the reconciled world have known Me, by grace, forasmuch as Thou hast sent Me.

After then that He had prayed for believers, and promised them so many good things, another prayer follows worthy of His mercy and benignity: O righteous Father, the world hath not known Thee; as if to say, I would wish that all men obtained these good things, which I have asked for the believing. But inasmuch as they have not known Thee, they shall not obtain the glory and crown.