The Sinner's Prayer (Billy Graham, Franklin Graham, Joel Osteen, John MacArthur, Stephen Nichols)

Have you heard of the sinners prayer? It is taught by Billy Graham, Franklin Graham, Joel Osteen, John MacArthur, Stephen Nichols, Lakewood church, and Ligioner ministries! The Prayer of Salvation is not found in the bible. Must I be water baptized to be saved? What is water baptism for? Do I need to be a Christian to go to heaven?