Has every human being already been declared reconciled and pardoned by God?
Yes, every human being who has ever lived has already been declared reconciled and pardoned so far as God is concerned, because Christ died for all sins. However, that reconciliation and pardon must be appropriated by faith like Abraham's; without that faith, it is all for nothing.
Les explains that Israel rested on the root and fatness of Abraham, yet that did not automatically make every Jew a believer. Likewise, Gentiles are in a place of privilege and blessing with opportunity to hear the Gospel and be saved, but not every Gentile will be saved. Every Gentile has opportunity and will be held responsible at the great white throne, unable to claim they never had a chance. Les stresses that when Christ died, He took care of all sins of the world. Every human being has already been declared reconciled and pardoned so far as God is concerned, but until they appropriate it with the kind of faith Abraham had, it is all for nothing. God does not look for someone who knows the Bible cover to cover or for a primary example of holy living before He can save.