The General Revelation of God and Romans 1:18

I frequently refer to Romans 1:18:  "The wrath of God is revealed from heaven against all ungodliness and unrighteousness of men, who, by their unrighteousness, suppress the truth." The significance of this verse is that it is a denial of the assertion of some Arminians and most unbelievers, especially the Mormons, that God is unjust to condemn to Hell those who have never heard the Gospel. Those people are supposedly never given a chance to convert, and, therefore, should not be punished for something that they did not know. That assertion is false. As Paul explains (see Romans 1:16-23 for context), no one is ignorant of the existence of God and our accountability to Him; rather, the unbeliever suppresses that knowledge. Should a person not be accountable for what he knows, even if he avoids that knowledge? Thus, the justice of God is vindicated.

Paul's explanation here is not something out of the blue, as if it originated with him. In fact, it is a concept that he brought forward from the Old Testament.

For example, we see Psalm 97:6 (compare Psalm 19:1-4): "The heavens proclaim His righteousness, and all the peoples see His glory." This is what theologians call "general revelation," God's revealing Himself in the creation, exactly what Paul also mentions in Romans 1:20. And notice that the Psalmist explicitly tells us that the revelation is visible to all cultures, refuting the assertion of the critics mentioned above. 

Consider also Psalm 98:2-3: "The Lord has made known His salvation; He has revealed his righteousness in the sight of the nations. He has remembered His steadfast love and faithfulness to the house of Israel. All the ends of the earth have seen the salvation of our God." Here the Psalmist repeats, in even stronger terms, his belief that God has revealed, not just His Person, but also that He is the Savior available to all who believe. This is a poetic version of John 3:16, showing in what way God loves the world and then His plan for believers. 

The Scriptures preclude any rational accusation of injustice against God.. He reveals Himself, His goodness, and His plans. If men refuse to see that revelation, because it would deprive them of their pet sins, then He can only be said to be just in His consequential judgment upon them.