The tribe of Levi did not receive a portion of the promised land when they arrived there. The full meaning of this statement may be made explicit. (See: [[rc://en/ta/man/translate/figs-explicit]])
Yahweh speaks of the special relationship that Aaron and his descendants will have with him as if Yahweh were something that they will inherit. Alternate translation: "Yahweh is what they will have" or "Yahweh will allow them to serve him and he will provide for them through that service"