The invisible realities of God's nature are clearly seen since the creation of the world, because they are understood through the creation itself--in particular God's eternal power and Deity. — God did not leave himself without witness. — Day after day utters speech, and night after night shows knowledge. There is no speech nor language, where their voice is not heard.
When I consider your heavens, the work of your fingers, the moon and the stars, which you have ordained; [I ask] what is man, that you are mindful of him? and the son of man, that you pay attention to him?
The God who made the world and everything in it is the Lord of heaven and earth and does not live in temples built by human hands, and he is not served by human hands, as if he needed anything. Rather, he himself gives everyone life and breath and everything else. From one man he made all the nations, that they should inhabit the whole earth; and he marked out their appointed times in history and the boundaries of their lands. God did this so that they would seek him and perhaps reach out for him and find him, though he is not far from any one of us.For in him we live and move and have our being.' As some of your own poets have said, 'We are his offspring."
God is always speaking. If you look at the world around you, He is clearly revealed in certain ways--His eternal power and His Deity (His "God-ness") are interwoven with the things He's made. The outside universe (sun, moon, stars, planets) all speak of Him, if you are listening. You may not know Him, but the God who made the world knows you. What's more, He wants you to know Him--not just in the sense of some religious ritual--He wants you to KNOW Him--His ways, His doings, His personality, His power, but most of all, Himself. We are told, "In Him we live and move and have our being," and also, "We are also His offspring." The same God who "Built a man" out of the red dust of the earth in Genesis longs for your fellowship, your connection with Him, and He's made a whole world, a whole universe, that shows you His wisdom, His greatness, His goodness, His love, and now He calls you to look upon His works, to see Him and seek Him.
Are you listening?