'Letteth' in the Bible

And when they went in to offer sacrifices and burnt offerings, Jehu appointed fourscore men without, and said, If any of the men whom I have brought into your hands escape, he that letteth him go, his life shall be for the life of him.

The beginning of strife is as when one letteth out water: therefore leave off contention, before it be meddled with.

For the mystery of iniquity doth already work: only he who now letteth will let, until he be taken out of the way.