The word "Oh" here introduces an exclamation that expresses a hope or prayer. Alternate translation: "I hope that the salvation of Israel will come" or "I pray that the salvation of will come" (See: [[rc://en/ta/man/translate/figs-exclamations]])
The salvation represents God, the savior, whose temple is in Zion. Alternate translation: "the savior of Israel would come from Zion" or "God would come from Zion and save Israel" (See: [[rc://en/ta/man/translate/figs-metonymy]])