Reference for Zevachim 14:4
עַד שֶׁלֹּא הוּקַם הַמִּשְׁכָּן, הָיוּ הַבָּמוֹת מֻתָּרוֹת, וַעֲבוֹדָה בַּבְּכוֹרוֹת. מִשֶּׁהוּקַם הַמִּשְׁכָּן, נֶאֶסְרוּ הַבָּמוֹת, וַעֲבוֹדָה בַּכֹּהֲנִים. קָדְשֵׁי קָדָשִׁים, נֶאֱכָלִים לִפְנִים מִן הַקְּלָעִים. קָדָשִׁים קַלִּים, בְּכָל מַחֲנֵה יִשְׂרָאֵל:
Before the <i>Mishkan</i> was constructed, the <i>Bamot</i> [personal altars] were permitted, and the services were performed by the first-borns. Once the <i>Mishkan</i> was constructed, the <i>Bamot</i> were forbidden, and the services were performed by the <i>Kohanim</i> [the priestly caste, a subgroup of the tribe of Levi, uniquely responsible for maintaining and carrying out the sacrificial services in the Temple]. <i>Kodshai Kodashim</i> were eaten within the [<i>Mishkan</i>] curtains, and <i>Kodashim Kalim</i> [were eaten] anywhere in the camp of Israel.