Here’s a thought.
The gospel is the great nonnegotiable of Christian truth. We aren’t allowed to add to, subtract from, embellish, or rejigger the sacred message of how sinful men can be reconciled to a holy God.
That’s why the apostle Paul reserved his sternest warning for anyone who would dare to mess with the message: “If any man is preaching to you a gospel contrary to what you received, he is to be accursed” (Galatians 1:9).
If you present a different god than the God of Scripture, you are effectively calling people to idolatry. If you preach another Christ you do not have the Lord; you have a liar or a lunatic. If salvation by grace through faith alone is corrupted with even the smallest amount of works-righteousness, “Christ will be of no benefit to you” (Galatians 5:2). If we don’t repent from our former sinful ways, we will perish (Luke 13:3,5).
There’s nothing more important for a Christian to be right about than how we can be right with God.