The world's greatest need is the Gospel because people are lost. We have to show them the way to get to heaven through Jesus Christ. We need to go into the world and preach the Gospel to every creature. We have to let the peoples of the world know that the way to be saved is through Jesus Christ and confessing with their mouths that Jesus is our one and only Savior. The challege is for us to go share the Gospel with all the world and what we can do to go place the Gospel in any part of the world. Preaching the Gospel is a Christian's greatest responsability.