Matthew 3:2

Repent. Gr. metanoeo, literally, “to think differently after,” hence, “to change one’s mind,” “to change one’s purpose.” It includes far more than confession of sin, though in the preaching of John that was, of course, included (v. 6). Theologically the word includes not only a change of mind but a new direction of the will, an altered purpose and attitude. See on ch. 4:17.

Kingdom of heaven. See on Matt. 4:17; Mark 1:15. Christ made it clear that the kingdom He established at His first advent was not the kingdom of glory (see DA 234). That would only be, He said, “when the Son of man shall come in his glory, and all the holy angels with him” (Matt. 25:31). Nevertheless, Jesus admitted before Pilate that He was indeed a “king” (John 18:33-37); in fact, this was His purpose in coming into this world (John 18:37). But He explained further that this “kingdom” was “not of this world” (John 18:36). The kingdom He came to establish “cometh not with observation,” but is a reality within the hearts of those who believe in Him and become the sons of God (Luke 17:20, 21; cf. John 1:12). See on Mark 3:14.