What is the most important lesson, message, or advice you have learned.

That Jesus died for sinners of which we all are until we accept Him as our Lord and Saviour.  I would advise everyone to read Matthew, Mark, Luke, and John until they understand what it really means then the rest of the New Testament.  Believe what it says because it is true, and do what it says.  I love all of you and I want us all to be in Heaven one day.