When Peter, James and John went with Jesus up on a high mountain they saw him transfigured. His face shone like the sun and His clothes became brilliant white. The three disciples then saw Moses and Elijah standing there and talking with Jesus. These three Jewish men were being prepared for the day when the words of Jesus would replace the Old Testament. Therefore, it is imperative to hear him and heed his words - all of them.
Many Bibles are red letter editions.
They have the words of Christ printed in red. Some people mistakenly believe these words are more important than the words in black. When studying something other than Matthew, Mark, Luke or John, a person may remark that Jesus did not say it since it is not in red. It is true the letter to the Romans does not contain the words Jesus spoke during his earthly ministry. Nevertheless, what Paul wrote are still the words of Christ.