Shared ground
These verses present a clear cause-and-effect: extraordinary greatness leads to pride, and pride leads to divine judgment. The “tree” image blends outward elevation (“exalted in stature,” “top among the thick boughs”) with an inward response (“his heart is lifted up because of his height”). The text treats that inner lift—self-exaltation tied to success—as culpable.
The judgment is also described clearly: God will “deliver him” into the power of “the mighty one of the nations,” who will act decisively. Even though a foreign ruler is the visible agent, God claims ownership of the outcome (“I have driven him out”) and ties it to moral failure (“for his wickedness”).
Where interpretation differs (only where needed)
Who is being addressed (“you”) and who is spoken about (“he/him”): Some readers take “you” and “he” as the same figure viewed from two angles within the metaphor. Others think the shift marks movement between the tree as an empire (“you”) and its ruler (“he/him”), or between a present target (Egypt) and a past example (Assyria) that Egypt resembles.
Whether the “top” was placed by self-promotion or by granted success: The line “he has set his top among the thick boughs” can sound like deliberate self-assertion, but it can also be read as describing the fact of reaching that height (success that happened), with the pride being the key fault regardless of how the height was attained.
Who is “the mighty one of the nations”: Many read this as a specific imperial conqueror in Ezekiel’s world (often Babylon’s king), while others keep it more general: whichever dominant ruler God uses to bring down the proud.
Why the disagreement exists
The passage stays inside a metaphor (tree/cedar), uses pronoun shifts (“you” → “he/him”), and names the conquering agent in a title rather than a personal name. It also combines future (“I will deliver”) with a completed-sounding claim (“I have driven him out”), which can be read as prophetic certainty or as reflecting a known historical pattern.
What this passage clearly contributes
It states explicitly that God opposes pride that grows out of greatness and that God can bring down a lofty power through international events and rulers. It also connects political downfall to moral accountability (“wickedness”), not merely to shifting fortunes. The text’s main point does not depend on identifying every referent with precision: pride is named as the reason, and judgment by a stronger power is announced as the result. Ezekiel 31:12 continues the fallout.