And Elias said to them: Take the prophets of Baal, and let not one of them escape. And when they had taken them, Elias brought them down to the torrent Cison, and killed them there.

And Elijah said to them, Seize the prophets of Baal; let not one of them escape! And they seized them; and Elijah brought them down to the torrent of Kishon, and slaughtered them there.

And Elijah saith to them, 'Catch ye the prophets of Baal; let not a man escape of them;' and they catch them, and Elijah bringeth them down unto the stream Kishon, and doth slaughter them there.

And Elijah said to them, Take the prophets of Baal, let not one of them get away. So they took them, and Elijah made them go down to the stream Kishon, and put them to death there.

And Elijah said to them, 'Seize the prophets of Baal. Do not let one of them escape.' And they seized them. And Elijah brought them down to the Wadi Kishon, and killed them there.

And Elijah said to them, "Apprehend the prophets of Baal, and do not let even one of them escape." And when they had apprehended them, Elijah led them down to the torrent Kishon, and he put them to death there.

Elijah required the people to show their conviction by acts - acts which might expose them to the anger of king or queen, but which once committed would cause them to break with Baal and his worshippers forever.
Elijah is said to have slain the "prophets of Baal," because the people killed them by his orders. Why they were brought down to the torrent-bed of Kishon to be killed, is difficult to explain. Perhaps the object of Elijah was to leave the bodies in a place where they would not be found, since the coming rain would, he knew, send a flood down the Kishon ravine, and bear off the corpses to the sea. Elijah's act is to be justified by the express command of the Law, that idolatrous Israelites were to be put to death, and by the right of a prophet under the theocracy to step in and execute the Law when the king failed in his duty.

Let not one of them escape - They had committed the highest crime against the state and the people by introducing idolatry, and bringing down God's judgments upon the land; therefore their lives were forfeited to that law which had ordered every idolater to be slain. It seems also that Ahab, who was present, consented to this act of impartial justice.

And Elijah said unto them, Take the prophets of Baal; let not (o) one of them escape. And they took them: and Elijah brought them down to the brook Kishon, and slew them there.
(o) He commanded them that as they were truly persuaded to confess the only God: so they should serve him with all their power, and destroy the idolaters his enemies.

And Elijah said unto them, take the prophets of Baal,.... The four hundred and fifty that were upon the spot; for the number of the people of Israel, now gathered together, were equal to it; nor was it in Ahab's power to hinder it, and he might himself be so far surprised and convicted as not in the least to object to it:
let not one of them escape: that there might be none of them left to seduce the people any more:
and they took them; laid hold on them, everyone of them:
and Elijah brought them down to the brook Kishon; which ran by the side, and at the bottom of Mount Carmel, into the sea; See Gill on Judges 4:7, Judges 5:21.
and slew them there; intimating, that it was owing to the idolatry they led the people into that rain had been withheld, and the brooks were dried up, as this might be; or, as Ben Gersom thinks, that the land might not be defiled with their blood, but be carried down the river after it: these he slew not with his own hand, but by others he gave orders to do it; and this not as a private person, but as an extraordinary minister of God, to execute justice according to his law, Deuteronomy 13:1 by which law such false prophets were to die; and the rather he was raised up and spirited for this service, as the supreme magistrate was addicted to idolatry himself.

Elijah said - He takes the opportunity, whilst the peoples hearts were warm with the fresh sense of this great miracle. The brook Kishon - That their blood might be poured into that river, and thence conveyed into the sea, and might not defile the holy land. Slew them - As these idolatrous priests were manifestly under a sentence of death, passed upon such by the sovereign Lord of life and death, so Elijah had authority to execute it, being a prophet, and an extraordinary minister of God's vengeance. The four hundred prophets of the groves, it seems, did not attend, and so escaped, which perhaps Ahab rejoiced in. But it proved, they were reserved to be the instruments of his destruction, by encouraging him to go up to Ramoth - Gilead.