וַנִּקַּח֙ אֶת־אַרְצָ֔ם וַנִּתְּנָ֣הּ לְנַחֲלָ֔ה לָרֽאוּבֵנִ֖י וְלַגָּדִ֑י וְלַחֲצִ֖י שֵׁ֥בֶט הַֽמְנַשִּֽׁי׃
And we took their land, and gave it for an inheritance unto the Reubenites, and to the Gadites, and to the half-tribe of the Manassites.
Read kabbalistic (mystical) interpretation of Deuteronomy 29:7: and classical mystical sources.