1 Samuel 20:5-9

And David said unto Jonathan, Behold, to morrow is the new moon, and I should not fail to sit with the king at meat: but let me go, that I may hide myself in the field unto the third day at even.

If thy father at all miss me, then say, David earnestly asked leave of me that he might run to Beth-lehem his city: for there is a yearly sacrifice there for all the family.

If he say thus, It is well; thy servant shall have peace: but if he be very wroth, then be sure that evil is determined by him.

Therefore thou shalt deal kindly with thy servant; for thou hast brought thy servant into a covenant of the LORD with thee: notwithstanding, if there be in me iniquity, slay me thyself; for why shouldest thou bring me to thy father?

And Jonathan said, Far be it from thee: for if I knew certainly that evil were determined by my father to come upon thee, then would not I tell it thee?