Deuteronomy 13:1-5
The true test of prophecy is not power alone but covenant fidelity to the Lord who redeemed His people.
1 If a prophet or a dreamer of dreams arises among you, and he gives you a sign or a wonder,
2 and the sign or the wonder comes to pass, of which he spoke to you, saying, “Let’s go after other gods” (which you have not known) “and let’s serve them,”
3 you shall not listen to the words of that prophet, or to that dreamer of dreams; for Yahweh your God is testing you, to know whether you love Yahweh your God with all your heart and with all your soul.
4 You shall walk after Yahweh your God, fear him, keep his commandments, and obey his voice. You shall serve him, and cling to him.
5 That prophet, or that dreamer of dreams, shall be put to death, because he has spoken rebellion against Yahweh your God, who brought you out of the land of Egypt and redeemed you out of the house of bondage, to draw you aside out of the way which Yahweh your God commanded you to walk in. So you shall remove the evil from among you.
The true test of prophecy is not power alone but covenant fidelity to the LORD who redeemed His people.
Moses teaches Israel how to respond when a prophet or dreamer gives a sign that comes to pass but uses that sign to entice the people after other gods. The LORD's people must test every religious claim by covenant loyalty, refuse the enticement, and remove the rebel who seeks to turn them from the Redeemer who brought them out of Egypt.
Moses addresses Israel on the plains of Moab before entry into Canaan. After commanding Israel not to imitate the worship of the nations, he now turns to internal enticement: a prophet or dreamer may arise within Israel and use a sign or wonder to lure the people after other gods.
Testing the Prophets and Purging the Tempters: The Absolute Demand of Exclusive Loyalty
The covenant's most dangerous threat is not the foreign enemy but the insider who speaks with apparent authority — the prophet whose sign comes true, the beloved family member, the intimate friend, or the entire city — and uses that authority to invite Israel toward other gods; and the command to execute such tempters, even when the sign proves genuine, reveals that the LORD's exclusive claim on Israel's loyalty supersedes every other relational, evidential, and communal obligation.