“He who looks up to the firmament and then writes himself down an atheist, brands himself at the same moment as an idiot or a liar.”
These are the words of Charles Spurgeon in commenting on Psalm 19:1, which says,
The heavens declare the glory of God, and the sky above proclaims his handiwork. (ESV)
Creation itself, especially the heavens and the firmament (the vastness of space with the sun, moon, and stars) – basically the things that are above and beyond us – says something. In the words of Psalm 19:1 it declares something – the glory of God!
The verses that follow (Psalm 19:2-6) make it clear to us the this declaration of the glory of God is abundant (“day unto day pours out speech” – v.3), universal in its reach (“Their voice goes out through all the earth“ – v.4), and it requires no translator, as it has no language barrier (“There is no speech, nor are their words, whose voice is not heard” – v.3). The declaration or testimony of creation is loud and clear to all who see it. And that testimony is not to its own glory, but to that of its Creator, God.
So anyone who looks up at the firmament (or sky) and then still calls himself an atheist is (to use Spurgeon’s phrase) branding himself as an idiot or a liar. We all know better, regardless of what we profess to believe (or disbelieve). That is how abundant and clear the testimony of creation is to the glory of its Creator. To use Paul’s words in Romans 1:20, it renders atheists (of both the philosophical and practical variety) “without excuse.”