The work of preaching cannot be done without power. The author draws attention to the words of the apostle Paul in 1 Corinthians 2:1-5. The power of Paul's preaching is seen by a careful consideration of both his message and his method.
The one thing which distinguishes false prophets from true prophets, and true apostles from false apostles, is the message preached. All true prophets throughout the Bible and now preach the same message, which has originated in God.