Albert Barnes Commentary Jeremiah 20:4

"For thus saith Jehovah, Behold, I will make thee a terror to thyself, and to all thy friends; and they shall fall by the sword of their enemies, and thine eyes shall behold it; and I will give all Judah into the hand of the king of Babylon, and he shall carry them captive to Babylon, and shall slay them with the sword." — Jeremiah 20:4 (ASV)

A terror to thyself, and to all thy friends – Jeremiah plays upon the meaning of Magor-missabib, saying that Pashur would be a terror to all around. It is remarkable that he prophesies no evil against Pashur (Jeremiah 20:6). His was to be the milder fate of being carried into captivity with Jehoiachin and dying peaceably at Babylon (Jeremiah 20:6), whereas his successor Zephaniah was put to death at Riblah (Jeremiah 52:24, 27).

His punishment probably consisted in this: he had prophesied lies. So when he saw the dreadful slaughter of his countrymen, Jehoiakim put to death, his young son dragged into captivity, and the land stripped of all that was best, his conscience so condemned him as the guilty cause of such great misery that in the agonies of remorse, he became a terror to himself and his friends.