Many sects of Christendom, along with many other religions, believe that there is a being or monster called the Devil or Satan who is the originator of the problems which are in the world and in our own lives, and who is responsible for the sin which we commit.
Madhehebu mengi ya mataifa ya Kikristo, sambamba na dini nyingine nyingi wanaamini kwamba kuna kiumbe au mtu asiye wa kawaida aitwaye Ibilisi au shetani ambaye ni Muasisi wa matatizo yaliyomo ulimwenguni na katika maisha yetu, na ni anayehusika na dhambi tunazotenda.