Matthew 10 and Galatians 1 are good places to start.

John 13:20 is also intriguing- "Truly, truly, I say to you, he who receives whomever I send receives Me; and he who receives Me receives Him who sent Me."

Of course, he may say that Paul and the other apostles were lyring and not really sent from Christ, but that is an argument that just doesn't hold water.

Also, thinking about his Wesleyan background, he would say that we can lose our salvation. I think that would be a prudent thing to address, as he wouldn't believe in "once sent, always sent"

True godliness is a sincere feeling which loves God as Father as much as it fears and reverences Him as Lord, embraces His righteousness, and dreads offending Him worse than death~ Calvin