What should creation teach us?
---John Calvin, Commentary on Genesis
Creation teaches us about its Creator. It is a revelation of His invisible attributes. Before there was Scripture, there was creation. Since Scripture, creation yet remains a testimony to those without the written Word. It holds all accountable to the Creator. It does not deceive us in what it reveals about Him; but we deceive ourselves when we refuse to see Him in it.
As Paul says:
"For the wrath of God is revealed from heaven against all ungodliness and unrighteousness of men, who by their unrighteousness suppress the truth. For what can be known about God is plain to them, because God has shown it to them. For his invisible attributes, namely, his eternal power and divine nature, have been clearly perceived, ever since the creation of the world, in the things that have been made. So They are without excuse. For although they knew God, they did not honor him as God or give thanks to him, but they became futile in their thinking, and their foolish hearts were darkened. Claiming to be wise they became fools, and exchanged the glory of the immortal God for images resembling mortal man and birds and animals and creeping things." Romans 1: 18-23
HT to James White for the Calvin quote.