1 Samuel 21:3

Then came David to Nob to Ahimelech the priest: and Ahimelech was afraid at the meeting of David, 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 any thing of the business whereabout I send thee, and what I have commanded thee: and I have appointed [my] servants to such and such a place.

And the priest answered David, and said, [There is] no common bread under mine hand, but there is hallowed bread; if the young men have kept themselves at least from women.

And David answered the priest, and said unto him, Of a truth women [have been] kept from us about these three days, since I came out, and the vessels of the young men are holy, and [the bread is] in a manner common, yea, though it were sanctified this day in the vessel.