Israel was to adhere firmly to the Lord its God (cf. Deu 4:4), and to put to death the prophet who preached apostasy from Jehovah, the Redeemer of Israel out of the slave-house of Egypt. לְהַדִּיחֲךָ, “to force thee from the way in which Jehovah hath commanded thee to walk.” The execution of seducers to idolatry is enjoined upon the people, i.e., the whole community, not upon single individuals, but upon the authorities who had to maintain and administer justice. “So shalt thou put the evil away from the midst of thee.” הָרָע is neuter, as we may see from Deu 17:7, as comp. with Deu 13:2. The formula, “so shalt thou put the evil away from the midst of thee,” which occurs again in Deu 17:7, Deu 17:12; Deu 19:19; Deu 21:21; Deu 22:21-22, Deu 22:24, and Deu 24:7 (cf. Deu 19:13, and Deu 21:9), belongs to the hortatory character of Deuteronomy, in accordance with which a reason is given for all the commandments, and the observance of them is urged upon the congregation as a holy affair of the heart, which could not be expected in the objective legislation of the earlier books.