1 Samuel 20:16-18

New Revised Standard Version, Anglicised Catholic Edition

¹⁶ Thus Jonathan made a covenant with the house of David, saying, ‘May the Lord seek out the enemies of David.’ ¹⁷ Jonathan made David swear again by his love for him; for he loved him as he loved his own life.

¹⁸ Jonathan said to him, ‘Tomorrow is the new moon; you will be missed, because your place will be empty.