'Fattest' in the Bible

When the anger of God went up against them, And slew of the fattest of them, And smote down the young men of Israel.

In time of security shall he come even upon the fattest places of the province; and he shall do that which his fathers have not done, nor his fathers fathers; he shall scatter among them prey, and spoil, and substance: yea, he shall devise his devices against the strongholds, even for a time.