וְלָֽקַחְתָּ֗ אֶֽת־כָּל־הַחֵלֶב֮ הַֽמְכַסֶּ֣ה אֶת־הַקֶּרֶב֒ וְאֵ֗ת הַיֹּתֶ֙רֶת֙ עַל־הַכָּבֵ֔ד וְאֵת֙ שְׁתֵּ֣י הַכְּלָיֹ֔ת וְאֶת־הַחֵ֖לֶב אֲשֶׁ֣ר עֲלֵיהֶ֑ן וְהִקְטַרְתָּ֖ הַמִּזְבֵּֽחָה׃
And thou shalt take all the fat that covereth the inwards, and the lobe above the liver, and the two kidneys, and the fat that is upon them, and make them smoke upon the altar.
Read kabbalistic (mystical) interpretation of Exodus 29:13: and classical mystical sources.