The main problem with Calvinism is that it is an apostolic teaching, without a named APOSTLE to back it up. Paul, Peter, James (and all the rest of scripture) do not teach Calvinism as it is defined today.
TULIP is not in any one scripture, or verse.
It is a conglomeration of interpretation of several or many scriptures.
That is fine. But there are not any supporters of Calvinism that claim to be APOSTLES, or PROPHETS. I don’t even think that Calvin claimed to be an APOSTLE or PROPHET.
What they claim is that their interpretation is just common sense, or it is “just what the Bible teaches”.
This is why there is such disagreement over just what Calvinism teaches. Calvinism is interpretative. But when you interpret the scripture, and add lots of words about what it means, you better be an APOSTLE or PROPHET, and claim to be an APOSTLE or PROPHET, and give the source of your revelation as coming from GOD HIMSELF.
That’s what the recognized people in the scriptures did. Those who write the doctrines of Calvinism don’t.
Calvin (and any of his followers or disciples or supporters) does not claim to be an APOSTLE or PROPHET. Calvin, etc., does not claim that they have received Divine Revelation about their teaching.
What they claim is that they have “just figured it out”, by using their knowledge of Hebrew, Greek, history, God, etc.
But they don’t claim to have heard their particular interpretation from GOD HIMSELF.
And they want others to believe them, and present their doctrine AS IF it had come from GOD HIMSELF.
I think this is a major issue, not just with Calvinism, but also with Dispensationalist teachings , Cessationist teachings, etc.
You have an interpretative teaching that sounds like scripture. It sounds like it came from an APOSTLE or PROPHET, but the writer claims no direct revelation from GOD HIMSELF.
I think these can be classified as FALSE APOSTOLIC TEACHINGS.
It if is not this, then just show where a recognized APOSTLE or PROPHET said all the things that your doctrine says.