“And I’d challenge any “liberal” theologian to give me scripture that justifies their positions on the issues”
By there very nature they have no respect for scripture. So, they would never use scripture to justify their positions unless it was a horrible misuse of scripture.
You’re right, “truth alone”.
They even deny the existance of truth, because once you accept the existance of truth, logic compels rejection of liberal ideology.
However, when arguing this point, I push my opposite into a position of denying the veracity of scripture. At that point, I simply let them live in that hell.