Saul sent messengers to David’s house to watch him, that he might kill him in the morning. But Michal, David’s wife, told him, “If you do not escape with your life tonight, tomorrow you will be killed.”
Here is, I. Saul's further design of mischief to David. When David had escaped the javelin, supposing he went straight to his own house, as indeed he did, Saul sent some of his guards after him to lay wait at the door of his house, and to assassinate him in the morning as soon as he stirred out, Sa1 19:11.
Commenting on 1 Samuel 19:11-17
And Saul sent messengers unto David's house,.... Supposing that he was gone thither; where this was is not said, very likely in Gibeah, where Saul lived: to watch him; that he might not get out from thence in the night: and to slay him in the morning; the reason why he did not order them to break into the house, and slay him at once...
Saul sent messengers unto David's house, to watch him, and to slay him--The fear of causing a commotion in the town, or favoring his escape in the darkness, seemed to have influenced the king in ordering them to patrol till the morning.