NET

5 The Israelites asked, “Who from all the Israelite tribes has not assembled before the Lord?”They had made a solemn oath that whoever did not assemble before the Lord at Mizpah must certainly be executed.

Darby

5 And the children of Israel said, Who is there among all the tribes of Israel that came not up with the congregation to Jehovah? For they had [made] a great oath concerning him that came not up to Jehovah to Mizpah, saying, He shall certainly be put to death.

KJV

5 And the children of Israel said, Who [is there] among all the tribes of Israel that came not up with the congregation unto the LORD? For they had made a great oath concerning him that came not up to the LORD to Mizpeh, saying, He shall surely be put to death.