Yea, they that feed of the portion of his meat shall destroy him, and his army shall overflow: and many shall fall down slain.
Yea, they that feed of the portion of his meat shall destroy him - those from whom he might naturally have looked for help-his intimates and dependents (Psalms 41:9; John 13:18): his ministers and guardians turned against him. Herein Ptolemy Philometer was a figure of Messiah, the King of Israel, against whom Judas, who did eat at His table, "the son of perdition" (John 17:12) turned traitor; just as Antichrist, the only other person in Scripture called "the son of perdition" (2 Thessalonians 2:3; Revelation 17:10-11), shall, after entering into covenant with Israel, turn against Israel and Israel's God and King.
And his army shall overflow - Philometor's army shall be dissipated as water. The phrase is used of overflowing numbers, usually in a victorious sense, but here in the sense of defeat, the very numbers which ordinarily ensure victory hastening the defeat through mismanagement.
And many shall fall down slain - (1Ma 1:18 , 'Many fell wounded to death'). Antiochus, when he might have slain all in the battle near Pelusium, rode round and ordered the enemy to be taken alive, the fruit of which policy was, he soon gained Pelusium and all Egypt (Diodorus Siculus, 26: 77).