'Letting' in the Bible

And Saul said to Michal, why have you been false to me, letting my hater go and get safely away? And in answer Michal said to Saul, He said to me, Let me go, or I will put you to death.

So changing his behaviour before them, he made it seem as if he was off his head, hammering on the doors of the town, and letting the water from his mouth go down his chin.