“Therefore, behold, I will make them know, this once I will make them know my power and my might, and they shall know that my name is the LORD.”
The Prophet again threatens the Jews, because their impiety was inexcusable, especially when attended with so great an obstinacy, he therefore says that God was already present as a judge: Behold I, he says — the demonstrative particle shews the near approach of vengeance — I will shew at this time: the words are emphatical, for God indirectly intimates that the Babylonian exile would be...
There is a mixture of mercy and judgment in these verses, and it is hard to know to which to apply some of the passages here - they are so interwoven, and some seem to look as far forward as the times of the gospel. I. God will certainly execute judgment upon them for their idolatries. Let them expect it, for the decree has gone forth. 1.
Commenting on Jeremiah 16:14-21
Therefore--In order that all may be turned from idols to Jehovah, He will now give awful proof of His divine power in the judgments He will inflict. this once--If the punishments I have heretofore inflicted have not been severe enough to teach them. my name . . . Lord--Jehovah (Psa 83:18): God's incommunicable name, to apply which to idols would be blasphemy. Keeping His threats and promises (Exo 6:3).