If he was on bb, I would take him up on it.Is it trying to pit Cals against one another or is it simply trying to have a coherent conversation? Example. If John Macarthur embraces double predestination, that is fine. If a Non-Cal says Calvinists embrace D.P. the outcry begins. Why not hold those within your ranks to the same standards you hold those outside your ranks?
There are texts for a positive predestination that the foreknown elect are predestined to be conformed to the image of the Son.
There is not one text saying God actively predestined anyone to hell.
I do not change the wording if the scriptures do not give a reason for such a change.