1 Samuel 21:4-6

4And 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.

5And 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.1

6So the priest gave him hallowed bread: for there was no bread there but the shewbread, that was taken from before Yhwh, to put hot bread in the day when it was taken away.