"I have never been able to conjure up (as some great Evangelical missionaries have) the appalling vision of the millions who are not only perishing but will inevitably perish. On the other hand... I am not and cannot be a universalist. Between these extremes I cherish and hope the majority of the human race will be be saved. And I have a solid biblical basis for this belief."

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But the Bible says that the unreached will be judged on a quite different basis than those who have heard the gospel. God will judge the unreached on the basis of their response to His self-revelation in nature and conscience. The Bible says that from the created order alone, all persons can know that a Creator God exists and that God has implanted His moral law in the hearts of all persons so that they are held morally accountable to God (Rom. 1.20; 2.14-15). The Bible promises salvation to anyone who responds affirmatively to this self-revelation of God

— William Lane Craig