Hi Phil,
Romans 1:18-25
For the wrath of God is revealed from heaven against all ungodliness and unrighteousness of men who suppress the truth in unrighteousness, because that which is known about God is evident within them; for God made it evident to them.
For since the creation of the world His invisible attributes, His eternal power and divine nature, have been clearly seen, being understood through what has been made, so that they are without excuse.
For even though they knew God, they did not honor Him as God or give thanks, but they became futile in their speculations, and their foolish heart was darkened. Professing to be wise, they became fools, and exchanged the glory of the incorruptible God for an image in the form of corruptible man and of birds and four-footed animals and crawling creatures.
Therefore God gave them over in the lusts of their hearts to impurity, so that their bodies would be dishonored among them. For they exchanged the truth of God for a lie, and worshiped and served the creature rather than the Creator, who is blessed forever. Amen.
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Mankind knows the truth and suppress it with their unrighteous deeds. God has made Himself evident to all and He constantly shows us in the old and the new that their free will to choose life or not.
In their knowledge of God they by their own free will chose not to acknowledge Him as God, they neither gave Him thanks nor Honored Him as God. Instead they became futile in their thinking and began to worship creatures that God made instead of God Himself.
So mankind knows truth, they know God and yet they of their own free will, they choose to exchange the truth for a lie and live their lives without Him, finding other ways to worship. If they don't worship and serve God, the only other alternative is to worship creation.
So in the final analysis, they are without excuse and they willingly choose to come under God's wrath.
Romans 1 (&2) really shows the sinfulness of man and as the whole of scripture describes again and again - his sinful nature.
Its good that the Bible clearly tells us that humankind will always choose freely from thier nature. Of course that is different from the Arminian 'autonomous free will'.