רַ֤ק אֶת־כָּל־הַמַּמְלָכָה֙ לֹ֣א אֶקְרָ֔ע שֵׁ֥בֶט אֶחָ֖ד אֶתֵּ֣ן לִבְנֶ֑ךָ לְמַ֙עַן֙ דָּוִ֣ד עַבְדִּ֔י וּלְמַ֥עַן יְרוּשָׁלִַ֖ם אֲשֶׁ֥ר בָּחָֽרְתִּי׃
Hanya saja, Aku tidak akan mengoyakkan seluruh kerajaan itu; satu suku akan Kuberikan kepada putramu demi Daud, hamba-Ku, dan demi Yerusalem yang telah Kupilih.”
Derashot HaRan
And this is intimated in the Blessed One's words to Solomon (I Kings 11:11-12): "And the L-rd said to Solomon: 'Because this was with you, and you did not keep my covenant and my statutes which I commanded you, I shall tear the kingdom away from you and give it to your servant. But in your days I will not do it, for David your father's sake. But I will tear it out of the hand of your son…" Therefore, Jacob assured Judah that even though his kings would sin, their sins would not go so far as to cause them to lose the reign completely, as the Blessed One says to Solomon (Ibid 13): "But I will not tear away all the kingdom. I will give one tribe to your son for David my servant's sake and for the sake of Jerusalem that I have chosen."