Neither shall Pharaoh, with [his] mighty army and great company, make for him in the war,.... The king of Egypt, to whom Zedekiah applied for horses and men to help him; though he should come with a great army, and a large multitude of people, yet should be of no use to Zedekiah, nor do any hurt to Nebuchadnezzar, or hinder him from taking Jerusalem:
by casting up mounts, and building forts, to cut off many persons; that is, when Nebuchadnezzar should besiege Jerusalem, and raise mounts, and build fortifications, in order to take the city, and destroy its inhabitants; as he did, Jeremiah 52:4; the Egyptian army should not be able to hinder him going on with the siege, and taking the city; for though the siege was broke up for a time, upon the approach of Pharaoh's army, yet Nebuchadnezzar, having conquered the Egyptians, returned again to the siege of Jerusalem, and took it; see Jeremiah 37:5.