1 Corinthians 8:3

is one of Paul's John-like sayings. In the apodosis he substitutes, by an adroit turn, “is known (ἔγνωσται : pf. pass [1228] of abiding effect upon the obj [1229]) by God” for “hath come to know God,” the expected consequence see the like correction in Galatians 4:9; cf. Philippians 2:12 f., 1 Corinthians 3:12; John 15:16; 1 John 4:10. Paul would ascribe nothing to human acquisition; religion is a bestowment, not an achievement; our love or knowledge is the reflex of the divine love and knowledge directed toward us. Philo, quoted by Ed [1230], has the same thought: γνωριζόμεθα μᾶλλον ἢ γνωρίζομεν (De Cherub., § 32). οὗτος ἔγνωσται ὐπʼ αὐτοῦ (sc. τοῦ Θεοῦ), “ he (and not the other) is known by Him”. Ev [1231] reverses the ref [1232] of the prons.: “He (God) hath been known by him (the man loving Him)” an unlikely use of οὗτος.

[1228] passive voice.

[1229] grammatical object.

[1230] T. C. Edwards' Commentary on the First Ep. to the Corinthians.

[1231] T. S. Evans in Speaker's Commentary.

[1232] reference.