John Calvin Reformed @genevareformer

Jeremiah relates here what sort of reward he had received for his prophecy, — that he had been smitten and cast into prison, not by the king or by his courtiers, but by a priest who had the care of the Temple.

Matthew Henry Presbyterian @wholebiblehenry

Here is, I. Pashur's unjust displeasure against Jeremiah, and the fruits of that displeasure, Jer 20:1, Jer 20:2. This Pashur was a priest, and therefore, one would think, should have protected Jeremiah, who was of his own order, a priest too, and the more because he was a prophet of the Lord, whose interests the priests, his ministers, ought to consult.

Commenting on Jeremiah 20:1-6

John Gill Reformed Baptist @doctorgill

Now Pashur the son of Immer the priest,.... Not the immediate son of Immer, but one that descended from him after many generations; for Immer was a priest in David's time, to whom the sixteenth course of the priests fell by lot, Ch1 24:14; who was also chief governor in the house of the Lord; the temple; not the high priest, since he was of...