1 Wafalme 11 : 15 1st Kings chapter 11 verse 15

Kwa maana ikawa, Daudi alipokuwako Edomu, naye Yoabu, mkuu wa jeshi, amepanda awazike waliouawa, akiisha kumpiga kila mwanamume wa Edomu,
soma Mlango wa 11

For it happened, when David was in Edom, and Joab the captain of the host was gone up to bury the slain, and had struck every male in Edom