'Lier in wait' in the Bible

that all of you have conspired against me, and there is none that informs me when my son has made a covenant with the son of Jesse; and there is none of you that is sorry for me, or informs me that my son has stirred up my servant as a lier-in-wait against me, as at this day?

And Saul said to him, Why have ye conspired against me, thou and the son of Jesse, in that thou hast given him bread, and a sword, and hast inquired of God for him, that he should rise against me as a lier-in-wait, as at this day?