The christianity sense of belief is alot stronger than you think. It is not enough to just aknowledge the existance of God.
1 John: 2:4 "Whoever says, 'I know him,' but does not keep his commandments is a liar, and the truth is not in him." Worst these same priest were denying our Lord. Corinthians 11:27 "Therefore whoever eats the bread or drinks the cup of the Lord unworthily will have to answer for the body and blood of the Lord. A person should examine himself and so eat the bread and drink the cup. For anyone who eats and drinks without discerning the body, eats and drinks judgment on himself."
1 John: 2:4 "Whoever says, 'I know him,' but does not keep his commandments is a liar, and the truth is not in him." Worst these same priest were denying our Lord. Corinthians 11:27 "Therefore whoever eats the bread or drinks the cup of the Lord unworthily will have to answer for the body and blood of the Lord. A person should examine himself and so eat the bread and drink the cup. For anyone who eats and drinks without discerning the body, eats and drinks judgment on himself."