וּבְהַעֲלֹ֨ת אַהֲרֹ֧ן אֶת־הַנֵּרֹ֛ת בֵּ֥ין הָעֲרְבַּ֖יִם יַקְטִירֶ֑נָּה קְטֹ֧רֶת תָּמִ֛יד לִפְנֵ֥י יְהוָ֖ה לְדֹרֹתֵיכֶֽם׃
And when Aaron lighteth the lamps at dusk, he shall burn it, a perpetual incense before the LORD throughout your generations.
Read midrashic interpretation of Exodus 30:8: and classical rabbinic exegesis.