Spoiler Alert ... My perception of the ending !!

Well I read so many posts on the message boards of this movie and no one perceived this movie like I did which is strange ..
Anyways, here goes my understanding
1- The creators showing in the house were demons not angels, angels don't look so horrid and ugly ..
2- These demons were evil and they plotted with Samuel to convince Joseph they were out to get him while the truth was that they all sought a "sacrifice" which was Joseph.
3- The concept of "Sacrifice" was highlighted several times like a) in the service of Samuel when he mentioned the story of the messenger Ibrahim and his sacrifice to go etc.. and b) when Joseph went to Javier's house and found his book highlighting one and only word which was "Sacrifice" .
4- The meaning of the sacrifice and how it benefited the new "religion" was that by sacrificing his only brother the new religion would get the attention needed for its recognition through the video he recorded right before his death and the fact that he is famous etc This is obvious in the last scene of the movie were new followers fled into the big church cause the death of his brother drew publicity and attention to the new religon.
5- This "new religion" was evil as explained by Samuel in the quote from the bible he kept reciting in the movie that an evil man would display great and miraculous acts but that doesn't make him good we understand in the last scene of the movie that this man is Samuel himself whom had the agent , the nurse , javier and even Joseph's friend in his tribe ..The demons as servants of the devil were all scheming to kill joseph as the sacrifice to this new religion. This evil new religion advocated that sin is normal and acceptable and maybe here lies its danger but the film doesn't focus on the message of the new religion .
If any one else can add to this or explain why he disagrees pls do...