וַיֹּ֨אמֶר יְהוָ֜ה אֶל־מֹשֶׁ֗ה דַּבֵּר֮ אֶל־אַהֲרֹ֣ן אָחִיךָ֒ וְאַל־יָבֹ֤א בְכָל־עֵת֙ אֶל־הַקֹּ֔דֶשׁ מִבֵּ֖ית לַפָּרֹ֑כֶת אֶל־פְּנֵ֨י הַכַּפֹּ֜רֶת אֲשֶׁ֤ר עַל־הָאָרֹן֙ וְלֹ֣א יָמ֔וּת כִּ֚י בֶּֽעָנָ֔ן אֵרָאֶ֖ה עַל־הַכַּפֹּֽרֶת׃
И сказал Господь Моисею: 'Скажи Аарону, брату твоему, чтобы он не приходил всегда во святилище в завесе перед покровом ковчега, который на ковчеге; что он не умрет; ибо я появляюсь в облаке на ковчеге.
Mishnah Yoma
The elders of the court handed him over to the elders of the priesthood and they took him up to the upper chamber of the house of Avtinas. They adjured him and then left. And they said to him [when leaving]: “Sir, high priest, we are messengers of the court and you are our messenger and the messenger of the court. We adjure you by the one that caused His name dwell in this house that you do not change anything of what we said to you.” He turned aside and wept and they turned aside and wept.