"For the LORD your God moves about in your camp to protect you and to deliver your enemies to you. Your camp must be holy." (Deuteronomy 23:14)
Moses lists those excluded from the assembly of the LORD: Ammonites and Moabites, to the tenth generation, because they did not give bread and water on the Exodus journey and hired Balaam to curse Israel. But Edomites are not to be despised, because they are brothers; their third-generation descendants may enter the assembly. Egyptians are not to be despised, because Israel lived in their country; their third-generation descendants may also enter. The exclusions and inclusions reflect both the moral memory of historical acts and the possibility of restoration across generations.
The camp must be kept clean because the LORD moves in it. Anyone who has a nocturnal emission must leave the camp until evening. A place outside the camp is designated for sanitation, with equipment for proper burial of waste. The reason given is direct: For the LORD your God moves about in your camp to protect you and to deliver your enemies to you. Your camp must be holy, so that he will not see among you anything indecent and turn away from you. The presence of God in the midst of his people creates the obligation of holiness in every dimension of life, including the most bodily. The Catechism draws from this the principle that the presence of God in the Eucharist calls for a corresponding holiness in every aspect of the community's life (CCC 2097).
Brothers and sisters, the LORD your God moves about in your camp. The holy God who walks among you sees everything, including what is buried and what is shameful. The call to holiness is therefore not an invitation to performance but to transparency: live in a way that you could live if you knew the LORD was walking past your tent at every moment. He is.
Lord God, you move about in your camp to protect your people. Let your presence sanctify every corner of our community, even the corners we would rather keep private. Your camp must be holy because you are holy and you walk in it. Through Christ our Lord. Amen.