You obviously consider the Bible lands as those of original life. Maybe the peoples of distant continents etc were given the short straw in Gods favor for reasons which completely make no sense. As if the preservation of historical records defines who God held in high esteem for that fact alone. As if the beliefs of other peoples is insignificant in Gods eyes.
Preaching directly is a useful way of educating other humans. Any communication is a useful way of educating humans as was noted by those who wanted Bibles published for reasons of their own personal conviction with the advent of the printing press. I wonder with Gods powers why the printing press were not invented in Isreal whilst Jesus were alive if he wanted the good news spread worldwide? Knowing he would not be returning for thousands of years must have made him wonder about those natives in N.America, S.America Australasia, Africa, & Asia as well as Europe. As it was millions lived for generations without ever hearing of him. So it must be OK to live differently, otherwise what was God doing allowing it?