וְעַל֙ גְּב֣וּל גָּ֔ד אֶל־פְּאַ֖ת נֶ֣גֶב תֵּימָ֑נָה וְהָיָ֨ה גְב֜וּל מִתָּמָ֗ר מֵ֚י מְרִיבַ֣ת קָדֵ֔שׁ נַחֲלָ֖ה עַל־הַיָּ֥ם הַגָּדֽוֹל׃
And by the border of Gad, at the south side southward, the border shall be even from Tamar unto the waters of Meribath-kadesh, to the Brook, unto the Great Sea.
Read midrashic interpretation of Ezekiel 48:28: and classical rabbinic exegesis.