John Gill Commentary 1 Kings 21:11

"And the men of his city, even the elders and the nobles who dwelt in his city, did as Jezebel had sent unto them, according as it was written in the letters which she had sent unto them." — 1 Kings 21:11 (ASV)

And the men of the city, even the elders and the nobles who
were the inhabitants in his city, did as Jezebel had sent to them ,
&c.] That Jezebel should contrive so execrable a scheme, and that there should be such sons of Belial among the common people to swear to such falsehoods, need not seem strange; but that the elders and nobles of the city, the chief magistrates thereof, should be so sadly and universally depraved as to execute such a piece of villany, is really surprising. Idolatry, when it prevails, takes away all sense of humanity and justice:

[and] as it was written in the letters which she had sent to them ;
they punctually, exactly, obeyed the orders in them, as follows.