For effective communication, use brevity. Jesus said, "Follow me." Now that's brief! He could be brief because of all that he was that he didn't have to say.
You cannot speak that which you do not know. You cannot share that which you do not feel. You cannot translate that which you do not have. And you cannot give that which you do not possess. To give it and to share it, and for it to be effective, you first need to have it. Good communication starts with good preparation.
The goal of effective communication should be for listeners to say, "Me, too!" verses "So what?"
Learn to express, not impress.
Effective communication is 20% what you know and 80% how you feel about what you know.