Deuteronomy 2:21 Midrash

עַ֣ם גָּד֥וֹל וְרַ֛ב וָרָ֖ם כָּעֲנָקִ֑ים וַיַּשְׁמִידֵ֤ם יְהוָה֙ מִפְּנֵיהֶ֔ם וַיִּירָשֻׁ֖ם וַיֵּשְׁב֥וּ תַחְתָּֽם׃

a people great, and many, and tall, as the Anakim; but the LORD destroyed them before them; and they succeeded them, and dwelt in their stead;