Romans 1:20 expands on God making Himself known through creation, explaining why people are without excuse.

Romans 1:18 reveals that people suppress the truth that is evident, providing the immediate context for why God's wrath is revealed.

Romans 1:21 shows the result of knowing God yet not honoring Him, continuing the argument from verse 19 about evident knowledge.

Psalm 19:1-6 describes how the heavens declare God's glory, illustrating the natural revelation Paul says God has shown to all.

Isaiah 40:26 calls attention to God's creation of the stars, supporting Paul's claim that God's invisible attributes are clearly seen.

Jeremiah 10:10-13 proclaims God as the true living God who made the earth, reinforcing the idea that creation reveals Him.

In Acts 17:23-30, Paul explains that God made Himself known to all people through creation and providence, mirroring the idea that knowledge of God is evident within everyone.

Ecclesiastes 3:11 says God has set eternity in the human heart, reflecting the internal awareness of God that Romans 1:19 describes.

Acts 14:17 says God did not leave Himself without witness, providing rains and seasons, which shows the same truth that God is evident through nature.

John 1:9 says the true light enlightens every person, which parallels God making Himself known to all, though John specifically refers to Christ.