Shared ground
Isaiah 23:10–12 speaks directly to communities tied to the coastal trading world of Tyre/Sidon. The imagery treats places as “daughters” (city-communities spoken of like a person), and it describes forced movement: “pass through,” “arise,” “cross over.” The passage presents the collapse of normal restraints and security as the backdrop for that movement (explicitly, “there is no restraint any more”).
It also anchors the upheaval in divine agency. The text says kingdoms are shaken and then names Yahweh as the one giving the decisive “commandment concerning Canaan,” aimed at the destruction of strongholds. The result is not merely economic pain but the end of public joy and the loss of rest, even in flight.
Where interpretation differs (only where needed)
Who/what is addressed by “daughter of Tarshish.” Some read it as a city or colony connected to Tarshish; others as a merchant community linked to Tarshish’s trade routes. Either way, it functions as a collective group being told to move freely through its “land” because earlier controls have broken.
What “as the Nile” is emphasizing. Some take it mainly as “free, unblocked flow” (movement without barriers). Others hear a darker note: like a river flooding its banks—movement that signals breakdown and disorder, not just freedom.
Who is the “he” who stretches out a hand over the sea. Some see the “he” as Yahweh throughout (with Yahweh then explicitly named). Others see a shift: “he” may refer first to an earthly agent (an imperial power acting across sea routes) while Yahweh is still the ultimate commander named in the second half of the verse.
How “Canaan” functions here. Some read “Canaan” as the literal land region; others as a broader label for the Phoenician/coastal trading zone (a commercial sphere more than a political border).
Why the disagreement exists
The passage uses poetic compression: personified place-names (“daughter of …”), condensed images (“as the Nile”), and an abrupt move from an unnamed actor (“he…”) to Yahweh’s named command. Those features leave room for more than one reasonable way to map the imagery onto geography and historical agents, while still preserving the main storyline of collapse, command, and displacement.
What this passage clearly contributes
The text explicitly connects the downfall of coastal strongholds and the end of Sidon’s rejoicing to Yahweh’s command (v.11–12). It also presents flight as an inadequate solution: crossing to Kittim may change location, but it does not produce “rest” (v.12). The passage contributes a sobering picture of judgment that reaches into economics, security, and communal identity, and it frames that upheaval as directed rather than accidental (v.11). One clear theological note is Yahweh’s authority over sea-linked powers and “kingdoms,” not only inland politics.