1 Kings 18:40

Overview - 1 Kings 18
In the extremity of famine Elijah, sent to Ahab, meets good Obadiah.
Obadiah brings Ahab to Elijah.
17 Elijah, reproving Ahab, by fire from heaven convinces Baal's prophets.
41 Elijah, by prayer obtaining rain, follows Ahab to Jezreel.
Treasury of Scripture Knowledge

1 Kings 18:40  (King James Version)
And Elijah said unto them, Take the prophets of Baal; let not one of them escape. And they took them: and Elijah brought them down to the brook Kishon, and slew them there.

or, Apprehend.
2 Kings 10:25

Judges 5:21

slew them there
Deuteronomy 13:5 ; 18:20 Jeremiah 48:10 ; Zechariah 13:2 Zechariah 13:3 ; Revelation 19:20 ; 20:10