Littérature du Second Temple sur L’Exode 19:6

וְאַתֶּ֧ם תִּהְיוּ־לִ֛י מַמְלֶ֥כֶת כֹּהֲנִ֖ים וְג֣וֹי קָד֑וֹשׁ אֵ֚לֶּה הַדְּבָרִ֔ים אֲשֶׁ֥ר תְּדַבֵּ֖ר אֶל־בְּנֵ֥י יִשְׂרָאֵֽל׃

mais vous, vous serez pour moi une dynastie de pontifes et une nation sainte.’ Tel est le langage que tu tiendras aux enfants d’Israël."

On the Prayers and Curses Uttered by Noah when he Became Sober

[66] Once more Jacob is the source of the twelve tribes, of whom the oracles say that they are “the palace and priesthood of God” (Exod. 19:6), thus following in due sequence the thought originated in Shem, in whose houses it was prayed that God might dwell. For surely by “palace” is meant the King’s house, which is holy indeed and the only inviolable sanctuary.