Mu Isezerano rya Kera byari byarahanuwe ko Imana izahimbaza abanyamahanga. (Yesaya 9: 1)
Nka Kristo, Yesu yabwirije abanyamahanga ubutumwa bwiza kandi atanga agakiza ukurikije ubuhanuzi bwo mu Isezerano rya Kera. (Matayo 15: 27-28, Luka 17: 11-18, Matayo 4: 12-17, Mariko 1:14)