1 And it came to pass, that when Jeremiah had made an end of speaking unto all the people all the words of the LORD their God, for which the LORD their God had sent him to them, even all these words, 2 Then spake Azariah the son of Hoshaiah, and Johanan the son of Kareah, and all the proud men, saying unto Jeremiah, Thou speakest falsely: the LORD our God hath not sent thee to say, Go not into Egypt to sojourn there: 3 But Baruch the son of Neriah setteth thee on against us, for to deliver us into the hand of the Chaldeans, that they might put us to death, and carry us away captives into Babylon. 4 So Johanan the son of Kareah, and all the captains of the forces, and all the people, obeyed not the voice of the LORD, to dwell in the land of Judah. 5 But Johanan the son of Kareah, and all the captains of the forces, took all the remnant of Judah, that were returned from all nations, whither they had been driven, to dwell in the land of Judah; 6 Even men, and women, and children, and the king's daughters, and every person that Nebuzar-adan the captain of the guard had left with Gedaliah the son of Ahikam the son of Shaphan, and Jeremiah the prophet, and Baruch the son of Neriah. 7 So they came into the land of Egypt: for they obeyed not the voice of the LORD: thus came they even to Tahpanhes. 8 Then came the word of the LORD unto Jeremiah in Tahpanhes, saying, 9 Take great stones in thine hand, and hide them in the clay in the brickkiln, which is at the entry of Pharaoh's house in Tahpanhes, in the sight of the men of Judah; 10 And say unto them, Thus saith the LORD of hosts, the God of Israel; Behold, I will send and take Nebuchadrezzar the king of Babylon, my servant, and will set his throne upon these stones that I have hid; and he shall spread his royal pavilion over them. 11 And when he cometh, he shall smite the land of Egypt, and deliver such as are for death to death; and such as are for captivity to captivity; and such as are for the sword to the sword. 12 And I will kindle a fire in the houses of the gods of Egypt; and he shall burn them, and carry them away captives: and he shall array himself with the land of Egypt, as a shepherd putteth on his garment; and he shall go forth from thence in peace. 13 He shall break also the images of Beth-shemesh, that is in the land of Egypt; and the houses of the gods of the Egyptians shall he burn with fire.
[AD 373] Ephrem the Syrian on Jeremiah 43:13
“He shall break the obelisks of the city of the sun, which is in Egypt, and the temples of the gods of the Egyptians he shall burn with fire.” The city of the sun is Egyptian Heliopolis, which was known for excessive demonic veneration and worship of futile idols. It had tall obelisks of amazing size. The height of each was up to sixty cubits, the capitals on the top of the obelisks were from shining brass that weighed up to a thousand or more pounds. On these obelisks were standing images and likenesses of people and animals that the Gentiles were worshiping. Also, those obelisks were inscribed with sacred writings of pagan mysteries. It was written about these obelisks that the Lord would break them. It does not speak so much about divine destruction and demolition of these obelisks as such, as about the destruction of the worship of demons and idols, images of those who were engraved on those obelisks. It was demolished, destroyed and stopped when the Lord Christ was incarnated and came to this world. This is exactly what Isaiah proclaimed when he said, “The Lord is seated on the light cloud and comes to Egypt, and handmade Egyptian idols will tremble in front of his face.” The cloud on which the Lord is riding symbolizes for us the virgin Mary, who gave birth to God; it also symbolizes the living and clear message of the Lord’s gospel and the holy name of Christ that was proclaimed by the apostles (these divine preachers). On them, as on the light cloud, the Lord was seated and was proclaimed to the ends of the earth. Also, these clouds mystically symbolize holy prophets. Just as Isaiah writes that God, in a figurative image of the vineyard, was talking about the people of Israel and that he would break their fence and “order the clouds that they rain no rain on it,” so likewise in this passage clouds mean prophets who rain a heavenly rain on us.

[AD 458] Theodoret of Cyrus on Jeremiah 43:13
The city had two names. It was called both On and Heliopolis. Exodus also taught this, for it says that the children of Israel built cities for Pharaoh: Pithom, Raamses and On, which is Heliopolis. God calls Nebuchadnezzar his servant, not because he is a servant in appearance or disposition but because he is a servant by nature: creation is the servant of the Creator. At the same time he teaches that Nebuchadnezzar does these things because God permits him to.