1 Samuel 21:4-6

4And the priest answered David, and said, There is no common bread under my hand, but there is holy bread; if only the young men have kept themselves from women. 5And David answered the priest, and said unto him, Of a truth women have been kept from us about these three days; when I came out, the vessels of the young men were holy, though it was but a common journey; how much more then to-day shall their vessels be holy? 6So the priest gave him holy bread; for there was no bread there but the showbread, that was taken from before Jehovah, to put hot bread in the day when it was taken away.