Yea, euery potte in Ierusalem and Iudah shall be holy vnto the Lord of hostes, and all they that sacrifice, shall come and take of them, and seethe therein: and in that day there shall be no more the Canaanite in the House of the Lord of hostes.
Zechariah 14:19 This shall be the punishment of Egypt, and the punishment of all the nations that come not vp to keepe the feast of Tabernacles.
Zechariah 14:20 In that day shall there be written vpon the bridles of the horses, The holinesse vnto the Lord, and the pottes in the Lords house shall be like the bowles before the altar.
Zechariah 14:21 Yea, euery potte in Ierusalem and Iudah shall be holy vnto the Lord of hostes, and all they that sacrifice, shall come and take of them, and seethe therein: and in that day there shall be no more the Canaanite in the House of the Lord of hostes.
The verse centers on "euery", "potte", "ierusalem", "iudah", "shall", "holy", "vnto", and "lord". It is saying that the verse draws attention to "euery" and "potte", so its meaning should be read from those terms before moving to application.
The prior verse says "In that day shall there be written...", giving immediate footing for "euery" and "potte". In Zechariah context, the local focus is covenant, worship, and faithfulness.
A plain takeaway is to answer the verse's own emphasis on "euery" and "potte" with trust shaped by these words, not by a vague optimism outside the passage.