וְאֶת־הַיְבוּסִי֙ יֹשֵׁ֣ב יְרֽוּשָׁלִַ֔ם לֹ֥א הוֹרִ֖ישׁוּ בְּנֵ֣י בִנְיָמִ֑ן וַיֵּ֨שֶׁב הַיְבוּסִ֜י אֶת־בְּנֵ֤י בִנְיָמִן֙ בִּיר֣וּשָׁלִַ֔ם עַ֖ד הַיּ֥וֹם הַזֶּֽה׃ (ס)
And the children of Benjamin did not drive out the Jebusites that inhabited Jerusalem; but the Jebusites dwelt with the children of Benjamin in Jerusalem, unto this day.
Rashi on Judges
But the Yevusi dwellers of Yerushalayim. There was a section of Yerushalayim24The reference here is not to members of the Yevusite nation, as Rashi explains that they were descendants of the Pelishte king Avimelech. Cf.Rashi to Yehoshua, 16:63, and Shmuel 2, 5:6. entitled Yevusi. They were descendants of Avimelech,25The Pelishite king (Bereishis, 21:32, 26:8). The patriarch Avrohom swore that he would deal kindly with him and his children and grandchildren. (Ibd, 21:23). Avrohom’s descendants were obligated by the oath as well. Cf.Midrash Rabah, Bereishis, 54:2. and they could not oust them because of the oath—until the arrival of Dovid26When Avimelech’s grandchildren no longer survived. (Rashi to Shmueil 2, 5:8)—as his27Avimelech’s grandson. grandson still lived, and he28Avrohom had sworn. had sworn to him, his son, and his grandson.