"The Advent Message to all the world in my generation."
The "message" is what we must offer the youth.
"To all the world" is where the youth must take our message.
"In this generation" tells us when it will be taken.
"With such an army of workers as our youth, rightly trained, might furnish, how soon the message of a crucified, risen, and soon-coming Saviour might be carried to the whole world! How soon might the end come..." MYP 196