"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." (Romans 1:19-20a ESV)
"The heavens declare the glory of God, and the sky above proclaims his handiwork. Day to day pours out speech, and night to night reveals knowledge." (Psalm 19:1-2 ESV)
"God himself is in and behind nature. Hence nature is not a finished work of art, that exists by itself outside of and apart from God. But God himself gives us to see and to hear his Majesty in the starry heavens by night, in the colors of light by day, in the wonders of the vegetable and animal-world, in the splendor of the sea, in the roar of the hurricane, sometimes even in the rolling of his thunder. In all this, is, and lives, the God Whom we worship. In the throbbings of the life of nature throbs his own Divine life. Whatever moves in creation, flows through it, and addresses itself to us from it, is the inner motion of God's own life. All nature is nothing else than a living, throbbing veil back of which God hides himself, and in whose folds and undulations he reveals Himself to us, clothed with Majesty. In the profound saying of the Apostle: The Invisible God is not only understood in nature but is also clearly seen.
"This clear sight is the all-important matter. Though this screen, this veil, this investiture of nature, God must be seen in his Omnipotence and Divinity. We are not to look upon nature as upon a dead palace which is beautiful by reason of its vast variety of lines and forms, but we must feel and know, that standing before the firmament, the cloudy heavens and the varied scenes of earth, we stand before God. That it is He who presents himself to us in it all, enters into us through it all, addresses us by it all, and who throughout the length and the breadth of it all gives us to behold the workings of the fingers of his Majesty. It is God who makes the lark sing for us. It is God who cleaves the sea, so that its waters foam. It is God who calls forth the sun from his tent, and at even tide directs his return thereto. It is God who every evening lights the twinkling fires in the stars. It is God whose voice we hear in the thunder. And only he who in all this, feels the very life of God, and clearly sees in it all, the Divinity of Omnipotence, understands the glory of the Invisible."
-- Abraham Kuyper, To Be Near Unto God, chapter 44.