'Killeth' in the Bible

The LORD killeth, and maketh alive: he bringeth down to the grave, and bringeth up.

And the men of Israel said, Have ye seen this man that is come up? surely to defy Israel is he come up: and it shall be, that the man who killeth him, the king will enrich him with great riches, and will give him his daughter, and make his father's house free in Israel.

And David spake to the men that stood by him, saying, What shall be done to the man that killeth this Philistine, and taketh away the reproach from Israel? for who is this uncircumcised Philistine, that he should defy the armies of the living God?

And the people answered him after this manner, saying, So shall it be done to the man that killeth him.