The ships of Tarshish did sing of thee in thy market: and thou wast replenished, and made very glorious in the midst of the seas.
The ships of Tarshish did sing of thee - personification; thy great merchant ships were palpable proofs of thy greatness. х shaarowtayik (H7788) Maurer translates, from a different Hebrew root, shaaraah, from shuwr (H7788), to go about, 'were thy, (mercantile) travelers.'] Fairbairn translates, 'were thy walls.' So the ships of war used to be called 'the wooden walls of England.' The parallelism to "thou wast ... made very glorious," favours the English version, "sing of thee" [from shuwr, or shaar, to sing].