John Gill Commentary Jeremiah 28:16

"Therefore thus saith Jehovah, Behold, I will send thee away from off the face of the earth: this year thou shalt die, because thou hast spoken rebellion against Jehovah." — Jeremiah 28:16 (ASV)

Therefore thus says the Lord

Because of this heinous offence, in lying in the name of the Lord, and deceiving the people:

behold, I will cast you from off the face of the earth ;

with the utmost indignation and abhorrence, as not worthy to live upon it: it signifies that he should die, and that not a natural, but violent death, by the immediate hand of God, by some judgment upon him; and so be by force taken off the earth, and buried in it, and be no more seen on it:

this year you shall die ;

within the present year, reckoning from this time; so that, had he died any time within twelve months from hence, it would have been sufficient to have verified the prophecy:

because you have taught rebellion against the Lord ;

to despise his word by his prophet; to contradict his will; to refuse subjection to the king of Babylon; to neglect his instructions, directions, and exhortations; and to believe a lie.