Parashat Re’eh & Haftarah
False Prophets — How Can We “Prove” a Prophet?
Deuteronomy 11:26–16:17 | Isaiah 54:11–55:5
This week we explored one of the most difficult questions raised by the Torah: How can we know whether someone who claims to speak in the name of God is truly speaking for God?
Parashat Re’eh gives a surprising answer. A prophet may present a sign or wonder — and the sign may even come true — without proving that the prophet is a true prophet of the LORD.
We began with Bal Tosif — the prohibition against adding to or subtracting from the Torah — and considered its possible connection to the laws of true and false prophecy that immediately follow.
We then continued to the test of prophecy in Deuteronomy 18 and to the extraordinary story of Micaiah son of Imlah and Ahab’s prophets in 1 Kings 22, where the question becomes even more complicated.
If a sign can come true, a majority can be wrong, and a prophet may even sincerely believe that he is speaking for God — how can a true prophet be distinguished from a false one?
Before the False Prophet: “Do Not Add”
Deuteronomy 13:1 (12:32)
We began with an overview of the major themes of Parashat Re’eh and its Haftarah, and then focused on the verse that appears immediately before the Torah’s discussion of the false prophet: “You shall not add to it, and you shall not take away from it.”
This raises an important question about the relationship between prophecy and Torah. If God continues to communicate through prophets, can a later prophet change an earlier divine command?
We discussed the possible connection between Bal Tosif — the prohibition against adding to the Torah and the laws that immediately follow concerning true and false prophecy.
As Maimonides explains, a prophet may communicate a temporary divine instruction in particular circumstances, but cannot permanently rewrite the Torah, add a new commandment, or remove one from it.
Prophetic authority operates within the covenant. A claimed revelation cannot simply replace the Torah that has already been given.
A Sign That Comes True — and a Prophet Who Is Still False
Deuteronomy 13:2–3
We read the Torah’s description of a prophet or dreamer who presents an אוֹת or מוֹפֵת — a sign or wonder.
The surprising element is that the Torah does not describe a failed sign. It explicitly tells us that the sign or wonder comes true.
Yet if the prophet then says, “Let us follow other gods,” the successful sign does not prove that the prophet is speaking for the LORD.
Biblical Hebrew: כִּי
We examined the different uses of כִּי in Biblical Hebrew. Depending on context, it may express different logical relationships and cannot always be translated with the same English word.
The Cohortative: נֵלְכָה
We also examined נֵלְכָה — “Let us go.” This first-person plural cohortative expresses will, intention, invitation, or desire.
The sequence of volitional verbal forms helps us hear the prophet not merely making a statement, but actively attempting to move the audience toward a course of action.
An impressive sign — even one that actually happens — is not enough to prove that a prophetic message comes from God.
The Test Is Also a Test of Israel
Deuteronomy 13:4–5
We continued with the command לֹא תִשְׁמַע — “You shall not listen.”
This allowed us to distinguish between two important patterns of negative command in Biblical Hebrew: לֹא + yiqtol and אַל + jussive.
We then focused on the remarkable phrase כִּי מְנַסֶּה יְהוָה אֱלֹהֵיכֶם אֶתְכֶם. The false prophet is not the only one being tested: Israel itself is being tested.
The question is whether an impressive sign can cause Israel to abandon its previous covenantal commitment to the LORD.
Breaking Down הֲיִשְׁכֶם
We analyzed הֲיִשְׁכֶם into its components, including the interrogative הֲ־ and the existential particle יֵשׁ.
We also discussed love as covenantal loyalty. In biblical legal and covenantal language, love is not merely an emotion; it can describe allegiance, faithfulness, and commitment.
Focus, Pausal Forms, and Word Order
In verse 5 we examined the forms תֵּלֵכוּ, תִּירָאוּ, תִּשְׁמֹרוּ, תִּשְׁמָעוּ and discussed their pronunciation and pausal forms.
We also noticed the repeated fronting of the object. This focalization makes the object the central theme of each clause: the LORD, His commandments, and His voice repeatedly stand at the center.
“Did the prophet perform a sign?”
It is also: “Where is the prophet asking Israel to place its loyalty?”
“How Shall We Know?” — A Second Test of Prophecy
Deuteronomy 18:21–22
We then looked ahead to Parashat Shoftim, the Torah portion that follows Re’eh, where the Torah returns to the problem of true and false prophecy.
This time the Torah asks the question explicitly: “How shall we know the word that the LORD has not spoken?”
The proposed test is fulfillment: if a prophet speaks in the name of the LORD and the prediction does not happen, the word was not spoken by the LORD.
But we also discussed an important distinction between a prophecy of good and a prophecy of disaster.
A prophecy of disaster may be intended precisely to bring about repentance. If people change their behavior and the threatened disaster is avoided, its non-fulfillment does not necessarily prove that the prophet was false.
Biblical Hebrew
We examined וְכִי תֹאמַר, returning once again to the functions of כִּי.
We also studied אֵיכָה — “How?” and the biblical language used to formulate a question about knowledge and verification.
Finally, we looked closely at הַדָּבָר אֲשֶׁר לֹא־דִבְּרוֹ יְהוָה — the distinction between a word claimed as prophecy and a word that the LORD has actually spoken.
This is why the Torah gives us more than one test.
Four Hundred Prophets — and One Dissenting Voice
1 Kings 22:6–7, 12–14, 22–23
We then moved from the legal material in Deuteronomy to one of the Bible’s most difficult narratives about prophecy: Micaiah son of Imlah, King Ahab, and Ahab’s prophets.
Ahab gathers approximately four hundred prophets and asks whether he should go to war at Ramoth-gilead. They unanimously encourage him to go and promise victory.
Micaiah, however, refuses to conform. When he is explicitly told that all the other prophets have spoken favorably to the king, he answers: “Whatever the LORD says to me, that I will speak.”
The story then becomes considerably more difficult. Micaiah describes a heavenly scene in which a spirit offers to become a lying spirit in the mouths of Ahab’s prophets so that Ahab will go into battle and fall.
This raises the possibility that the prophets are communicating a false message without consciously knowing that they are false prophets. They may sincerely believe that what they are saying comes from God.
The biblical problem is therefore far more complicated than distinguishing an honest prophet from a deliberate fraud.
How can we recognize false prophecy if the prophet himself may sincerely believe that his message comes from God?
So How Do We Recognize a True Prophet?
Miracles, Fulfillment, Majority, and Covenant
The biblical texts resist a single, simple test.
A miracle is not enough. Deuteronomy 13 explicitly describes a sign that comes true while the prophet’s message is nevertheless rejected.
A prediction alone is not enough. Deuteronomy 18 makes fulfillment important, yet prophecies of disaster may be conditional and may succeed precisely by causing people to change.
A majority is not enough. In 1 Kings 22, approximately four hundred prophets agree, while Micaiah stands alone.
And even sincerity may not be enough. Micaiah’s vision raises the possibility of prophets who communicate a false message while believing themselves to be speaking truthfully.
The Torah therefore begins with something more fundamental: the prophetic message must remain within Israel’s prior covenantal loyalty to the LORD.
It requires us to examine the message, its relationship to the covenant, its fulfillment, and the authority of the voice claiming to speak for God.