Matthew 7:23

And then will I profess unto them--or, openly proclaim--tearing off the mask. I never knew you--What they claimed intimacy with Christ, is just what He repudiates, and with a certain scornful dignity. "Our acquaintance was not broken off--there never was any." depart from me--(Compare Mat 25:41). The connection here gives these words an awful significance. They claimed intimacy with Christ, and in the corresponding passage, Luk 13:26, are represented as having gone out and in with Him on familiar terms. "So much the worse for you," He replies: "I bore with that long enough; but now--begone!" ye that work iniquity--not "that wrought iniquity"; for they are represented as fresh from the scenes and acts of it as they stand before the Judge. (See on the almost identical, but even more vivid and awful, description of the scene in Luk 13:24-27). That the apostle alludes to these very words in Ti2 2:19 there can hardly be any doubt--"Nevertheless the foundation of God standeth sure, having this seal, The Lord knoweth them that are His. And, Let every one that nameth the name of Christ depart from iniquity."

This chapter continues and concludes Christ's sermon on the mount, which is purely practical, directing us to order our conversation aright, both toward God and man; for the design of the Christian religion is to make men good, every way good. We have, I. Some rules concerning censure and reproof (Mat 7:1-6). II. Encouragements given us to pray to God for what we need (Mat 7:7-11). III. The necessity of strictness in conversation urged upon us (Mat 7:12-14). IV. A caution given us to take heed of false prophets (Mat 7:15-20). V. The conclusion of the whole sermon, showing the necessity of universal obedience to Christ's commands, without which we cannot expect to be happy (Mat 7:21-27). VI. The impression which Christ's doctrine made upon his hearers (Mat 7:28, Mat 7:29).

7:23 I never knew you: These people were never converted, even though they did great things in God’s name. They break God’s laws through rejection of the Father’s will as taught by Jesus. Having never known Christ, they never learned to do what he commanded.