'Matter' in the Bible

The {Israelites} said to him, "We will go up on the main road, and if we and our livestock drink your water, we will pay [for it]. It is only a small matter; let us pass through on our feet."

because they [were] attacking you with their deception, [with] which they have deceived you on the matter of Peor and on the matter of Cozbi the daughter of the leader of Midian, their sister who was struck on the day of the plague because of the matter of Peor."

Behold, these women {caused} the {Israelites}, by the word of Balaam, to be in apostasy against Yahweh in the matter of Peor, so that the plague was among the community of Yahweh.