I've got a good idea.
He should teach this verse:
Ephesians 2:8-9 (American Standard Version)
8 For by grace have ye been saved through faith; and that not of yourselves, it is the gift of God;
9 not of works, that no man should glory.
And this one:
John 3:3
3 Jesus answered and said unto him, Verily, verily, I say unto thee, Except one be born anew, he cannot see the kingdom of God.
American Standard Version (ASV)
Copyright © 1901 Public Domain
39 Now one of the criminals hanging there reviled Jesus, saying, "Are you not the Messiah? Save yourself and us." 40 The other, however, rebuking him, said in reply, "Have you no fear of God, for you are subject to the same condemnation? 41 And indeed, we have been condemned justly, for the sentence we received corresponds to our crimes, but this man has done nothing criminal." 42 Then he said, "Jesus, remember me when you come into your kingdom." 43 He replied to him, "Amen, I say to you, today you will be with me in Paradise."
"John 3:3
3 Jesus answered and said unto him, Verily, verily, I say unto thee, Except one be born anew, he cannot see the kingdom of God. "
Just a suggestion if you are so inclined, check out what that original word from the "Greek" 'anew', other translations use the word 'again', really is.