The aftermath of a dramatic encounter leaves an older prophet reflecting on a profound warning. He recognizes the absolute truth in the words spoken by the man of God from Judah, declaring with complete certainty that the prophecy will be fulfilled, even without a specific timeframe [מלבי״ם]. Acknowledging the man of God as a true prophet, the older man considers it a great honor to share a resting place with him [ביאור שטיינזלץ].
However, his main motivation for requesting a shared burial is deeply personal and rooted in self-preservation. He knows that a time will come when the bones of those buried in the area will be dug up and burned. Aware that the remains of the man of God will be spared, he hopes that by being buried right next to him, his own bones will be protected from the fire [רש״י, רד״ק]. Because he is a false prophet lacking any personal merit, his remains are ultimately saved solely due to his proximity to the true prophet [מלבי״ם].
As he speaks, the older prophet expands the scope of the original warning. While the man of God initially focused only on the specific altar in Bethel, the older prophet includes all the surrounding high places in the impending destruction [מצודת דוד]. This reveals that even though King Jeroboam officially established only two golden calves, many other unauthorized places of worship existed throughout the kingdom. The older prophet foresees that a future king, Josiah, will eventually destroy all of them [רלב״ג].
In detailing this destruction, a specific geographic reference to the cities of Samaria introduces a chronological puzzle, as the city of Samaria was not built until much later by King Omri [מצודת דוד, רלב״ג, מלבי״ם]. To resolve this, the location is simply referred to by the name it would eventually hold in the future [מצודת דוד]. While some might argue that possessing such knowledge of the future proves the older man was actually a true prophet, the primary approach among commentators rejects this idea. He remained a false prophet, and he simply heard the specific detail about the cities of Samaria directly from the man of God [מלבי״ם].