'Fat' in the Bible

Then Ezra said to them, “Go [your way], eat the rich festival food, drink the sweet drink, and send portions to him for whom nothing is prepared; for this day is holy to our Lord. And do not be worried, for the joy of the Lord is your strength and your stronghold.”

“They captured fortified cities and a fertile land.They took possession of houses full of all good things,Hewn cisterns, vineyards, olive groves,And fruit trees in abundance.So they ate and were filled and became fat,And they reveled and were delighted in Your great goodness.