Yahweh speaks of his people worshiping him as they should as if the people themselves were the incense offering. (See: [[rc://en/ta/man/jit/figs-metaphor]])
These two phrases mean the same thing and emphasize that Yahweh will bring his people back from all of the nations to which he had scattered them. See how you translated this in [Ezekiel 20:34](../20/34.md). (See: [[rc://en/ta/man/jit/figs-parallelism]])