Matthew 7:21-23

False discipleship. From false teachers the discourse naturally passes to spurious disciples. Luke's version contains the kernel of this passage (Luke 6:46). Something of the kind was to be expected in the teaching on the hill. What more likely than that the Master, who had spoken such weighty truths, should say to His hearers: “In vain ye call me Master, unless ye do the things which I say”? As it stands here the logion has probably, as Weiss suggests (Matt. Evang., p. 219), undergone expansion and modification, so as to give to the title “Lord,” originally = מר, Teacher, the full sense it bore when applied to Christ by the Apostolic Church, and to make the warning refer to false prophets of the Apostolic age using Christ's name and authority in support of anti-Christian tendencies, such as anti-nomianism (ἀνομίαν, Matthew 7:23).