Numbers 25:14-15

25:14 Now the name of the Israelite who was stabbed – the one who was stabbed with the Midianite woman – was Zimri son of Salu, a leader of a clan ¹  of the Simeonites. 25:15 The name of the Midianite woman who was killed was Cozbi daughter of Zur. He was a leader ²  over the people of a clan of Midian. ³ 

Numbers 35:21

35:21 or with enmity he strikes him with his hand and he dies, the one who struck him must surely be put to death, for he is a murderer. The avenger of blood must kill the murderer when he meets him.

[25:14]  ¹ tn Heb “a father’s house.” So also in v. 15.

[25:15]  ² tn Heb “head.”

[25:15]  ³ sn The passage makes it clear that this individual was a leader, one who was supposed to be preventing this thing from happening. The judgment was swift and severe, because the crime was so great, and the danger of it spreading was certain. Paul refers to this horrible incident when he reminds Christians not to do similar things (1 Cor 10:6-8).