Q. What does it mean in Zech 14.21 that there will no longer be Canaanites in the house of the Lord?

A. To get the answer to that let’s back up to v 20. It says “on that day” and that is an expression meaning “when Messiah comes.” It goes on to say the vessels of the Temple in Jerusalem will be “holy’ or sanctified, set apart to the Lord. This tells us that when the Messiah comes there will be a Temple and sacrifices (see Ezekiel chapters 40-48) and everything there will be ritually clean. In v 21 some versions mention “Canaanite” and others “merchants” or “traffickers” which is the meaning of Canaanite. So, you could read it this way that “in that day, when Messiah comes, there will be no merchants or traffickers for money in the house of the Lord.” This is also a prophecy concerning Yeshua. When He cleansed the Temple of the moneychangers, the traffickers and the merchants it was a direct reference back to this verse. He was saying to the people that the Messiah had come and traffickers and merchants were not allowed in the house of God.