This is a matter that requires some thought. For if we are to say, you must know who Jesus is, and repent of your sins. Then you have condemned most of mankind.
And before you answer, what of the tribes in Africa before England and France and all the others who wanted colonies. What of those in Australia, before they were discovered. What of all those created "Children of God" who never got a chance. Are they all condemned? Does our God create people only to be condemned?