18 For the message of the cross is foolishness to those who are perishing, but to us who are being saved it is the power of God. (1 Corinthians 1:18)
And here is how you twisted it:
You have to know God personally to understand His Word. If somebody claims that the Bible is "not literally true", then they are revealing something about themselves.
Piece of cake.
Um, I don't think so. If those who don't know Christ consider the gospel message to be foolishness, and therefore reject it, and as a result of that rejection do not have the benefit of the Holy Spirit to reveal the meaning of Scripture to them, and by virtue of that lack of understanding decide that the Bible is not literally true, then they are revealing themselves to have rejected Christ, rejected the Holy Spirit; and they are revealing themselves as not being Christians.
Simple.