According to Paul, why is no man excused from knowing God?

In Romans 1:20, Paul says, "For since the creation of the world His invisible attributes are clearly seen, being understood by the things that are made, even His eternal power and Godhead, so that they are without excuse" (NKJV).

Learn More:

• Verse Study Notes
• Translation Comparison
• The Creator Clearly Seen by Jud Davis
• The Bible vs. other Holy Books by Dr. Jason Lisle
• The Failure of Unbiblical Worldviews to Justify Laws of Logic by Dr. Jason Lisle
• Evil Choices Produce Evil People Henry M. Morris III, D.Min.
• How Can Things Invisible Be Seen? by Henry M. Morris, Ph.D.
• Woodpeckers. Now That's Using Your Head! video by the Off Grid Creationist
• deBUNKED There is no evidence for God video by Reasons for Hope
• Do Atheists Have Faith? by Mark Spence
• The Apostle Paul's Use of Genesis 1-3 in Romans 1 by Simon Turpin
• Books of the Bible Flash Cards: Romans