Reference for Isaiah 65:9

וְהוֹצֵאתִ֤י מִֽיַּעֲקֹב֙ זֶ֔רַע וּמִיהוּדָ֖ה יוֹרֵ֣שׁ הָרָ֑י וִירֵשׁ֣וּהָ בְחִירַ֔י וַעֲבָדַ֖י יִשְׁכְּנוּ־שָֽׁמָּה׃

And I will bring forth a seed out of Jacob, and out of Judah an inheritor of My mountains; and Mine elect shall inherit it, And My servants shall dwell there.

ספר השרשים