דברים, פרק י״ח, פסוק ט״ו

Human beings possess an inherent desire to uncover the hidden and peer into the future. To prevent the Israelites from turning to the sorcerers and diviners of surrounding nations, God establishes a direct and pure channel of communication. Rather than relying on magic or physical manipulations, God suddenly and directly selects an individual to serve as His messenger [מלבי״ם, ביאור ישר]. The primary approach among commentators is that this divine promise ensures a continuous chain of prophets across generations, entirely removing the need to seek out fortune-tellers [רש״י, מזרחי, שפתי חכמים, גור אריה]. While some view this as a specific reference to Joshua, who would immediately succeed Moses [רבנו בחיי, חזקוני, שפתי כהן], or as an allusion to Jeremiah, who would later deliver similarly harsh prophecies [שפתי כהן], the broader purpose remains the same. This ongoing prophetic institution directly answers the plea the people made at Mount Sinai, where they begged not to hear God's voice directly out of fear of death, asking instead for a human mediator [בעלי ברית אברם].

A true prophet must emerge organically from within the community. Geographically, this indicates that the spirit of prophecy rests exclusively within the borders of the Land of Israel [רמב״ן, מזרחי, תורה תמימה, צפנת פענח, אדרת אליהו, ביאור ישר]. Socially, it ensures that the prophet's family and background are entirely familiar to the public. Because he grows up among the people, his wisdom, discipline, and righteousness can be properly evaluated without the shroud of vague mystery often associated with mystics [העמק דבר, ביאור שטיינזלץ, רש״ר הירש]. Furthermore, he must come from a distinguished and pure lineage, as the Divine Presence does not rest upon someone of flawed descent [בכור שור]. This spiritual elevation is granted exclusively to the Israelites [רמב״ן, תורה תמימה, ביאור ישר], specifically excluding the descendants of Esau and Ishmael [רבנו בחיי]. Even in instances where a prophet is sent to other nations, such as Jonah, the mission is strictly to deliver rebuke and inspire repentance, not to establish a permanent prophetic connection for them [תורה תמימה].

Although the Torah later testifies that no prophet ever reached the unparalleled spiritual level of Moses, future prophets are still compared to him in crucial ways [מזרחי, רלב״ג, ביאור ישר]. Foremost, the prophet must be a flesh-and-blood human being, rather than an angel or a deity, standing in stark contrast to ancient pagan beliefs [אם למקרא, רש״ר הירש]. Like Moses, the prophet will speak God's word with absolute confidence, harboring no fear of mortal men, even when confronting kings [מזרחי, גור אריה]. He will remain completely faithful to God and to the original Torah, neither adding to it nor taking away from it, and the nation is expected to place their absolute trust in him just as they did in Moses [רמב״ן, רשב״ם, רבנו בחיי, גור אריה, אדרת אליהו].

The obligation to obey an established prophet is absolute, extending not only to religious duties but also to optional matters, moral guidance, and general instruction in serving God [רלב״ג, מלבי״ם]. The primary approach among commentators is that the people must follow the prophet's directives even if he commands them to temporarily violate a Commandment. This applies, however, only as an emergency measure designed for a higher purpose to strengthen the faith, such as when Elijah offered a sacrifice on Mount Carmel outside the designated Temple. Crucially, this authority is strictly temporary. If a prophet commands the worship of idols or attempts to permanently abolish any Commandment, he is immediately deemed a false prophet and must not be obeyed under any circumstances [ספורנו, תורה תמימה, רלב״ג, מלבי״ם, רש״ר הירש, ביאור ישר, אדרת אליהו].