The surprising answer to that is yes. But he didn't say what it was. Understanding the Bible is another matter. The Word of God can not be understood without the Holy Spirit teaching its reader what it means. That makes the Bible's accuracy not quite the same sort of problem that scientists faced when they had to abandon Galileo.
Some people think they see contradictions between books of the Bible that render it untrue.
But in these days of rapid learning, the cosmos itself seems filled with many strange contradictions and possibilities. In science a contradiction implies a false premise or hypothesis. This is also true in theology. Perhaps what appears to be a contradiction is simply a truth in need of good exegesis. We can choose to let Christ renew our minds.