John Gill Commentary Jeremiah 26:2

"Thus saith Jehovah: Stand in the court of Jehovah`s house, and speak unto all the cities of Judah, which come to worship in Jehovah`s house, all the words that I command thee to speak unto them; diminish not a word." — Jeremiah 26:2 (ASV)

Thus says the Lord, stand in the court of the Lord's house , &c.] It, the great court of Israel, where the people used to meet together for worship:

and speak unto all the cities of Judah ; the inhabitants of them; not only to those that dwelt at Jerusalem but in the rest of the cities of Judah; for what he was to say concerned them all, they having all sinned, and needed repentance and reformation; without which they would be involved in the general calamity of the nation:

which come to worship in the Lord's house ; as they did three times in the year, at the feasts of passover, pentecost, and tabernacles; and it was now the last of these, as Bishop Usher thinks, when this prophecy was to be delivered to them:

all the words that I command you to speak to them : nothing must be kept back, the whole counsel of God must be declared; not a word suppressed through affection to them, or fear of them; God commanded, and must be obeyed, let the consequence be what it will:

diminish not a word ; soften not any expression or alter any word, by putting one more smooth for one rough; or change the accent, or abate of the vehemency of delivering it; but both for matter manner, and form let it be as directed, without any subtraction and diminution, change or alteration: a rule which every minister of the word ought to attend to; seeking not to please men, but God that sends him and Christ whose minister he is.