19-28 and here is the list of their names:Caleb son of Jephunnehfrom Judah,Shemuel son of Ammihudfrom Simeon,Elidad son of Chislonfrom Benjamin,Bukki son of Joglifrom Dan,Hanniel son of Ephodfrom Manasseh,Kemuel son of Shiphtanfrom Ephraim,Elizaphan son of Parnachfrom Zebulun,Paltiel son of Azzanfrom Issachar,Ahihud son of Shelomifrom Asher,and Pedahel son of Ammihudfrom Naphtali.”