Exodus 19:15

And the priest answered David and said, “There is no ordinary bread on hand, but there is consecrated bread; if only the young men have kept themselves from women.”

And David answered the priest and said to him, “Surely women have been kept from us as previously when I set out and the vessels of the young men were holy, though it was an ordinary journey; how much more then today will their vessels be holy?”

and said to them, “You are the heads of the fathers’ households of the Levites; set yourselves apart as holy, both you and your relatives, that you may bring up the ark of Yahweh, the God of Israel, to the place that I have prepared for it.

Stop depriving one another, except by agreement for a time, so that you may devote yourselves to prayer, and come together again so that Satan will not tempt you because of your lack of self-control.