Albert Barnes Commentary Ezekiel 28:21

"Son of man, set thy face toward Sidon, and prophesy against it," — Ezekiel 28:21 (ASV)

Prophecy against Zidon. Zidon (modern Saida) was more ancient than Tyre and was the original metropolis of Phoenicia (Genesis 10:19), but during the times of Phoenician greatness, it always played a subordinate part. Only once (Judges 10:12) do we find the “Zidonians” in conflict with Israel. The evil they did was seducing them to idolatry , as in the case of Jezebel, daughter of Ethbaal, king of the Zidonians (1 Kings 16:31).

The capture of Tyre by Nebuchadnezzar increased the importance of Zidon, which was a wealthy and flourishing town when Artaxerxes Ochus destroyed it. It has rallied from time to time but has never attained any great consequence, although not in as complete ruin as Tyre.