וַיֹּ֤אמֶר אֵלִיָּ֙הוּ֙ אֶל־הָעָ֔ם אֲנִ֞י נוֹתַ֧רְתִּי נָבִ֛יא לַיהוָ֖ה לְבַדִּ֑י וּנְבִיאֵ֣י הַבַּ֔עַל אַרְבַּע־מֵא֥וֹת וַחֲמִשִּׁ֖ים אִֽישׁ׃
엘리야가 백성에게 이르되 여호와의 선지자는 나만 홀로 남았으나 바알의 선지자는 사백오십 인이로다
Bamidbar Rabbah
This is the ordinance of the Torah - (Psalms 12:6) The sayings of G-d are pure (purify). R. Hanan Ben Pazzi elucidated this verse [of psalms with the parsha of Parah] Parah- which has seven seven sevens; seven cows, seven fires, seven sprinkling, seven washes, seven unclean, seven pure, seven priests. And if someone tells you they are five, tell him: Moses and Aaron are included, as it is said: And the Lord spoke to Moses and Aaron, saying, This is the ordinance of the Torah: