You have to know what God's word says before you can discern between someone's opinion and the facts written in His word. When I read 1 Corinthians 15:1-4, it tells me what the gospel is. Romans 1:16 tells me that I have salvation if I believe the gospel. When I read Ephesians 2:8, it tells me I am saved through faith and that God gave me salvation as a gift. We can argue and discuss all things about our faith but God's word clearly states that we are saved by faith plus nothing. I don't care what church you attend, if they don't teach salvation by faith only; you are in the wrong one. No one church holds the truth.
And 2 Peter 3:16-17 says very clearly that you are doing so at great peril.
Just for the sake of formal completeness:
There is only one Church and it is held by the Truth who is its head.
You have conveniently forgtten these Scripture verses:
"So faith by itself, if it has no works, is dead." James 2:17
"You see that man is justified by works and not by faith alone." James 2:24
"For as the body apart from the spirit is dead, so faith apart from works is dead." James 2:26