Albert Barnes Commentary Numbers 25:6

"And, behold, one of the children of Israel came and brought unto his brethren a Midianitish woman in the sight of Moses, and in the sight of all the congregation of the children of Israel, while they were weeping at the door of the tent of meeting." — Numbers 25:6 (ASV)

A Midianite woman - literally, “the Midianite woman,” the particular one by whom he had been enticed (compare Numbers 25:15 and Numbers 31:18). Her high rank proves that Zimri had not fallen in with her by mere chance, but had been deliberately singled out by the Midianites as one whom they must at any price lead astray.

Weeping before the door of the tabernacle - The plague (Numbers 25:9) had already broken out among the people, and the more God-fearing had assembled at the door of the tabernacle of God to intercede for mercy, when Zimri committed the new and public outrage just described.