Agreed. And everyone is accountable for their own beliefs - even more so when you have the Word of God so freely available. I don't agree with everything that John Calvin, Martin Luther, or even my own church teaches. Yes there are differences. But on the essentials, most Protestants are unified. Salvation by grace through faith in Christ alone. The trinity. The virgin birth. These kind of basics which are found in Scripture. We may disagree on tongues, or mode of baptism, or even on the efficacy of Communion (which I know you would consider an essential - but we are discussing Protestant unity), but on essentials that make the difference between "saved" and "not saved." We are unified. It doesn't matter to your salvation if you believe you were elected or not. That is a secondary issue. It does matter what you believe about Christ and Him crucified.
*Simply untrue.
Which protestant community decides for all other protestants what the "essentials" are?
Jesus created His Church. You reject it and so you are forced to supplant Divinely Constituted Authority with your own personal opinion.
That is one of the oldest, and most perennial, heresies you routinely engage in.
Why should anyone listen to you?
The Bible DOES teach the Church, not you, is the Pillar and Ground of Truth
What is lacking in them? The Holy Spirit? I don't get how you hold this contradiction within Sola Scriptura and yourself. How do you know whether God misled their teaching or you?
We're discussing how you believe Sola Scriptura is the method for this, but I'm not trying to attack your specific beliefs outside this narrow subject.
For now, anyway.. :) And, thanks..