“rebuilt.” The Hebrew word is banah (#01129 בָּנָה) and it can mean “build” or “rebuild” depending on the context. Here it means “rebuild.” Over the centuries many of the cities of Israel and Judah were destroyed (and here in Ezekiel the primary emphasis is on the cities of Judah that were destroyed by Babylon), but God promises that in the future, which we know will be in the Millennial Kingdom when Jesus Christ rules the earth from Jerusalem, Israel will be repopulated and the cities rebuilt.
[For more on God regathering all the Israelites to Israel, see commentary on Jer. 32:37. For Jesus Christ reigning over all the earth see commentary on Dan. 2:35. For more on the future reign of Jesus Christ over the earth, see Appendix 3, “Christ’s Future Kingdom on Earth”].