IT IS FAULTY thinking to suggest that only the red letters of the Bible really matter or possess authority over us...
Jesus told His apostles that He had many things to say to them, but that they were unable to bear such teaching at that moment in time ( John 16:12). Nevertheless, He promised that the Holy Spirit would guide them into all truth. But where would the Holy Spirit get the message that He would give to the apostles? Jesus said:
"However, when He, the Spirit of truth, has come, He will guide you into all truth; for He will not speak on His own authority, but whatever He hears He will speak; and He will tell you things to come. He will glorify Me, for He will take of what is Mine and declare it to you. All things that the Father has are Mine. Therefore I said that He will take of Mine and declare it to you" ( John 16:13-15).
The bottom line is that, whenever the apostles wrote down what the Spirit inspired them to say, they were writing the equivalent of the words of Jesus, because the Spirit took His message from Jesus, Who took it from the Father (B. J. Clarke).
KneEmail: "...The things which I write to you are the commandments of the Lord" (1 Cor. 14:37b).