At the end of the gospel presentation, I asked him if he was willing to trust Christ as his Savior. He immediately said yes. We prayed together and I sincerely believed that he had entered into God's family. Later on when I talked with him personally, he professed to be a Christian, but he could not explain to me in any intelligible fashion what it meant to be a Christian. Drunks on the street say they believe.
Unmarried couples sleeping together say they believe.
Elderly people who haven't sought worship or fellowship for 40 years say they believe. All kinds of lukewarm, world-loving church attenders say they believe. There are undoubtedly many people in the world today, and especially in the United States, who call themselves Christians, but who are not truly born again. This should not surprise us, because this was also true in Christ's day. Not according to the passage.