1 Samuel 21:3-5

3Now what [food] do you have on hand? Give me five loaves of bread, or whatever can be found.”

4The priest answered David, “There is no ordinary (unconsecrated) bread on hand, but there is consecrated bread; [you may have it] if only the young men have kept themselves from women.”

5David answered the priest, “Be assured that women have been kept from us in these three days since I set out, and the bodies of the young men were consecrated (ceremonially clean), although it was an ordinary (unconsecrated) journey; so how much more will their vessels be holy today?”