Numbers 25:17-18

Young's Literal Translation

¹⁷ `Distress the Midianites, and ye have smitten them,

¹⁸ for they are adversaries to you with their frauds, [with] which they have acted fraudulently to you, concerning the matter of Peor, and concerning the matter of Cozbi, daughter of a prince of Midian, their sister, who is smitten in the day of the plague for the matter of Peor.'