I know you not - You were not in the company of those who attended me to the marriage-feast, and are unknown to me. Applied to professing Christians, having only a profession of religion, but no real piety, it means, I do not know or acknowledge you as Christians. I do not approve of you, or delight in you, or admit that you are my friends. The word "know" is often used in the sense of approving, loving, acknowledging as real friends and followers. See Matthew 7:23; Psalm 1:6; 2-Timothy 2:19; 1-Thessalonians 5:12.

I know you not - As if he had said, Ye are not of my company - ye were neither with the bride nor the bridegroom: ye slept while the others were in procession. I do not acknowledge you for my disciples - ye are not like him who is love - ye refused to receive his grace - ye sinned it away when ye had it; now you are necessarily excluded from that kingdom where nothing but love and purity can dwell.

But he answered and said,.... The Lord and bridegroom from within, thought fit to give them an answer, but an unexpected and awful one to them:
verily I say unto you, I know you not; which must be understood in consistence with the omniscience of Christ: he knew their persons, conduct, and state; he knew they were foolish virgins, graceless professors, who had made no account of him and his righteousness; but had trusted to, and depended upon, their external profession of religion: they were none of the people whom he foreknew, or knew as his own, and loved with an everlasting love; he never knew them as his father's choice in him, or as this father's gift to him; he never knew them in the everlasting covenant, or as his sheep, for whom he died; he never knew them to believe in him, or love him; nor ever exalt his person, blood and sacrifice, at his table, nor do any good work with a single eye to his glory; he never approved of them, liked their persons, or their conduct; or ever owned them as the true companions, either of his bride, or of himself: which answer implies, that as the door was shut, so it should remain; there was no admittance for them, nor any to be hoped for; and it is all one as if he had said, begone, and depart hence. The Persic version adds such a clause, "begone from my door".

But he answered and said, Verily I say unto you, I know you not--The attempt to establish a difference between "I know you not" here, and "I never knew you" in Matthew 7:23 --as if this were gentler, and so implied a milder fate, reserved for "the foolish" of this parable--is to be resisted, though advocated by such critics as OLSHAUSEN, STIER, and ALFORD. Besides being inconsistent with the general tenor of such language, and particularly the solemn moral of the whole (Matthew 25:13), it is a kind of criticism which tampers with some of the most awful warnings regarding the future. If it be asked why unworthy guests were admitted to the marriage of the King's Son, in a former parable, and the foolish virgins are excluded in this one, we may answer, in the admirable words of GERHARD, quoted by TRENCH, that those festivities are celebrated in this life, in the Church militant; these at the last day, in the Church triumphant; to those, even they are admitted who are not adorned with the wedding garment; but to these, only they to whom it is granted to be arrayed in fine linen clean and white, which is the righteousness of saints (Revelation 19:8); to those, men are called by the trumpet of the Gospel; to these by the trumpet of the Archangel; to those, who enters may go out from them, or be cast out; who is once introduced to these never goes out, nor is cast out, from them any more: wherefore it is said, "The door is shut."

I know you not. This means, I do not recognize you as persons entitled to enter. The claims that they might have had once had been forfeited.