לָכֵ֗ן כֹּ֥ה אָמַ֛ר אֲדֹנָ֥י יְהוִ֖ה אֲלֵיהֶ֑ם הִנְנִי־אָ֕נִי וְשָֽׁפַטְתִּי֙ בֵּֽין־שֶׂ֣ה בִרְיָ֔ה וּבֵ֥ין שֶׂ֖ה רָזָֽה׃
Therefore thus saith the Lord GOD unto them: Behold, I, even I, will judge between the fat cattle and the lean cattle.
Read halakhic rulings (Jewish law) on Ezekiel 34:20: and classical halakhic sources.