The point is that if there is no God, then objective right and wrong do not exist. As Dostoyevsky said, โAll things are permitted.
William Lane CraigIn order to receive forgiveness, we need to place our trust in Christ as our Savior and the Lord of our lives. But if we reject Christ, then we reject God's mercy and fall back on His justice. And you know where you stand there. If we reject Jesus' offer of forgiveness, then there is simply is no one else to pay the penalty for your sin-except yourself.
William Lane CraigI have found that the more I reflect philosophically on the attributes of God the more overwhelmed I become at his greatness and the more excited I become about Bible doctrine. Whereas easy appeals to mystery prematurely shut off reflection about God, rigorous and earnest effort to understand him is richly rewarded with deeper appreciation of who he is, more confidence in his reality and care, and a more intelligent and profound worship of his person.
William Lane CraigBut 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