1 Samuel 21:1-2

Then came David to Nob to Ahimelech the priest: and Ahimelech came to meet David trembling, and said unto him, Why art thou alone, and no man with thee? And David said unto Ahimelech the priest, The king hath commanded me a business, and hath said unto me, Let no man know anything of the business whereabout I send thee, and what I have commanded thee: and I have appointed the young men to such and such a place.