וַאֲכַלְתֶּם־חֵ֣לֶב לְשָׂבְעָ֔ה וּשְׁתִ֥יתֶם דָּ֖ם לְשִׁכָּר֑וֹן מִזִּבְחִ֖י אֲשֶׁר־זָבַ֥חְתִּי לָכֶֽם׃
And ye shall eat fat till ye be full, and drink blood till ye be drunken, of My feast which I have prepared for you.
Read midrashic interpretation of Ezekiel 39:19: and classical rabbinic exegesis.