וְיֶ֨תֶר הַגִּלְעָ֤ד וְכָל־הַבָּשָׁן֙ מַמְלֶ֣כֶת ע֔וֹג נָתַ֕תִּי לַחֲצִ֖י שֵׁ֣בֶט הַֽמְנַשֶּׁ֑ה כֹּ֣ל חֶ֤בֶל הָֽאַרְגֹּב֙ לְכָל־הַבָּשָׁ֔ן הַה֥וּא יִקָּרֵ֖א אֶ֥רֶץ רְפָאִֽים׃
and the rest of Gilead, and all Bashan, the kingdom of Og, gave I unto the half-tribe of Manasseh; all the region of Argob—all that Bashan is called the land of Rephaim.
Read midrashic interpretation of Deuteronomy 3:13: and classical rabbinic exegesis.