I believe the Catholic and Orthodox "denominations" teach a false gospel of works. They stand under condemnation of Galatians 1:8-9 because they teach that justification is not by faith alone in Christ's merits alone but that our good works or obedience to God's commandments after baptism, albeit aided by grace, is necessary in order to remain justified in God's eyes. To me this is heresy. I believe even some Arminian groups, like the Churches of Christ and Seventh-Day Adventists, also can be deemed heretical because they believe that our obedience to God's commandment is necessary to stay justified.
In conclusion, I believe that these groups have stepped outside the bounds of orthodox biblical Christianity and should not be deemed "Christian" in the biblical sense.
In conclusion, I believe that these groups have stepped outside the bounds of orthodox biblical Christianity and should not be deemed "Christian" in the biblical sense.