'Slay' in the Bible

When the king of Israel (Jehoram) saw them, he said to Elisha, “My father, shall I kill them? Shall I kill them?”

Elisha answered, “You shall not kill them. Would you kill those you have taken captive with your sword and bow? Serve them bread and water, so that they may eat and drink, and go back to their master [King Ben-hadad].”

And Hazael said, Why weepeth my lord? And he answered, Because I know the evil that thou wilt do unto the children of Israel: their strong holds wilt thou set on fire, and their young men wilt thou slay with the sword, and wilt dash their children, and rip up their women with child.

So Jehu the son of Jehoshaphat, the son of Nimshi, conspired against Joram [to dethrone and kill him]. Now Joram with all Israel was protecting Ramoth-gilead against Hazael king of Aram (Syria),

And it cometh to pass in the morning, that he goeth out, and standeth, and saith unto all the people, 'Righteous are ye; lo, I have conspired against my lord, and slay him -- and who smote all these?

And it came to pass, as soon as he had made an end of offering the burnt offering, that Jehu said to the guard and to the captains, Go in, and slay them; let none come forth. And they smote them with the edge of the sword; and the guard and the captains cast them out, and went to the city of the house of Baal.

And Jehoiada the priest commanded the captains of the hundreds that were set over the host, and said to them, Lead her forth without the ranks; and whosoever follows her, slay with the sword; for the priest said, Let her not be put to death in the house of Jehovah.

But he did not put the sons of the murderers to death, in compliance with what is written in the Book of the Law of Moses, in which the Lord commanded, saying, “The fathers shall not be put to death for the sons, nor shall the sons be put to death for the fathers; but each shall be put to death [only] for his own sin.”

Wherefore they spake to the king of Assyria, saying, The nations which thou hast removed, and placed in the cities of Samaria, know not the manner of the God of the land: therefore he hath sent lions among them, and, behold, they slay them, because they know not the manner of the God of the land.