יחזקאל, פרק ל״ט, פסוק י״ז

As the time comes to purify the land, God summons the forces of nature to a massive feast. He calls upon all types of winged birds and wild animals to consume the fallen enemy armies [מצודת דוד, ביאור שטיינזלץ]. This gathering serves as a second method for cleansing the land [אברבנאל] and takes place before the dead are buried [ביאור שטיינזלץ]. Because the animals feed on the bodies first, it explains why, even after many months pass, no flesh will remain on the bones of the dead [מלבי״ם].

The arrival of these creatures happens in two distinct stages. First, the scattered animals gather together into groups. Once they have formed these groups, they assemble to enter the battlefield together [מלבי״ם].

The primary approach among commentators is that this event is a metaphor for a grand feast God prepares for the predatory animals, with the meal itself consisting of the massive army of Gog [מצודת דוד]. It is considered a great feast for two main reasons. Quantitatively, there is a massive abundance of food, provided with royal generosity, allowing the animals to eat and drink until they are completely full and intoxicated. Qualitatively, the meal consists of the flesh of mighty warriors and the blood of the land's leaders. These fallen men are compared to choice cattle, making this an exceptionally high-quality meal for the beasts of the earth [מלבי״ם, אברבנאל].