The Catholic church is the one who changed the 10 commandments and don't believe the bible is true. They've changed the day we worship on also, to a day named after a pagan sun god. This is why they say the papacy is the anti-christ.

Daniel 7:25 And he shall speak great words against the most High, and shall wear out the saints of the most High, and think to change times and laws

I would hope you believe in the bible and believe in Jesus and what he taught, otherwise you're following the church and not Jesus. The Catholic church teaches you can do things (like taking communion and paying money)... Where the bible clearly says the only way is grace through Jesus Christ so no one may boast. If you don't believe the bible, and follow the church, then you have another master.

Matthew 6:24 No one can serve two masters; for either he will hate the one and love the other, or he will be devoted to one and despise the other. You cannot serve God and wealth.

Matthew 24:3 And as he sat upon the mount of Olives, the disciples came unto him privately, saying, Tell us, when shall these things be? and what shall be the sign of thy coming, and of the end of the world? 4 And Jesus answered and said unto them, Take heed that no man deceive you.