Good verse to use PROBABLYin this case, though Vektek hasn't been specific enough either in his 'claim' against Moreless, or the 'basis' for his claim, other than to say he believes what MacArthur said. Not much to go on, because if he is only reflectively 'amen-ing' that, he might not even understand what he seems to be claiming except as a slogan.
Yet to be determined.
Adam and Eve were not any more Christian than Moses. God's creation, First humans, prototypes in myriad ways, and more, but not Christians. Essential to the faith in the big picture, absolutely.