What does the Bible say about the knowledge of God through creation?

Romans 1:20 states that the invisible attributes of God, such as His eternal power and divine nature, are clearly seen through the things that have been made. This implies that creation itself provides a witness to God's existence and character. While it does not convey the gospel, it reveals enough about God that all men are left without excuse if they choose not to honor Him (Romans 1:20). The psalmist in Psalm 19:1 further emphasizes this by declaring that 'the heavens declare the glory of God.' Thus, creation can be understood as God's initial revelation of Himself, showing mankind His power and divine nature, thereby holding them accountable.