God will draw all of mankind back to Himself as He states in John 12:32 "and I, if I may be lifted up from the earth, will draw all men unto myself." The problem is, the vast majority of mankind does not believe this verse. Why? Because they have a narrow view of life that is limited to this age only whereas the Bible speaks of ages to come as well.
Obviously, not everyone believes in this current age.
Saved by grace and here to proclaim the Savior of the world, our LORD Jesus Christ.