Thomas Aquinas

Third, he places the abandonment of the field itself: and they shall be left, like an uncultivated field, which signifies the slaughter of men, after there were many beasts in the land of Egypt: these things says the Lord God, say to every fowl, and to all the birds, and to all the beasts of the field: assemble yourselves, make haste, come together from every side to my victim, which I slay for you, a great victim upon the mountains of Israel: to eat flesh, and drink blood (Ezek 39:17).

Commentary on Isaiah ↗