How do you know which is mere opinion and which is truth?
The same way you know. By studying, praying and living.
As the Bible says, the angel can mask as an angel of light, and plant 99 truths to one falsehood.
The Catholic church is not immune to that either. It’s not something you do once and then it’s finished. It takes constant vigilance.
So again, how can you tell you are being led the real Holy Spirit? The Bible tells you to test the spirits…so how have you tested the spirits?
I John 4:1
By this you know the Spirit of God: every spirit that confesses that Jesus Christ has come in the flesh is from God;…
2 John 1:7
I say this because many deceivers, who do not acknowledge Jesus Christ as coming in the flesh, have gone out into the world. Any such person is the deceiver and the antichrist.
3 John 1:11
Dear friend, do not imitate what is evil but what is good. Anyone who does what is good is from God. Anyone who does what is evil has not seen God.
More evasion from you. This has been answered previously…by the common teaching, common life, common worship and liturgies of the Catholic and Orthodox churches.
So I will shoot back the question you have evaded: How do you know what is being taught to you is actually from the Apostles and not mere opinion?
I’ve already gone over this many times. I’m being taught the teachings of the apostles from the new testament only.
So back to you…has your church tested the spirits? How?
Yes they have.
So can you be sure also nothing unholy goes on in your protestant church/community?
Is your protestant church without sin?
I don’t know everyone intimately but of course no one is without sin.
You will know them by the fruit they bear. The leadership is bearing good fruit. If I find out they are involved in criminal activity I will no longer attend.