Last Sunday I alluded to but did not go into detail of the Apostle Paul's use of general revelation and common grace in Athens. For those interested the passage I was referring to is Acts 17:22-28 where Paul succinctly makes use of both of these doctrines.  He draws their attention to the natural inclination of mankind to percieve God in v22-23.  He demonstrates the common grace of God (v.24-26) in not needing anything from man but providing life and everything to everyone.

And reveals the purpose of this general revelation in v.27, that people may find God, even as they grasp the truths of Him in nature, in their poetry/philosophy, and even because they are image bearers themselves of God. (v28)

Acts 17:22-28

22  So Paul, standing in the midst of the Areopagus, said: Men of Athens, I perceive that in every way you are very religious.23 For as I passed along and observed the objects of your worship, I found also an altar with this inscription, To the unknown god. What therefore you worship as unknown, this I proclaim to you.24 The God who made the world and everything in it, being Lord of heaven and earth, does not live in temples made by man,25 nor is he served by human hands, as though he needed anything, since he himself gives to all mankind life and breath and everything.26 And he made from one man every nation of mankind to live on all the face of the earth, having determined allotted periods and the boundaries of their dwelling place,27 that they should seek God, in the hope that they might feel their way toward him and find him. Yet he is actually not far from each one of us,28 for In him we live and move and have our being; as even some of your own poets have said, For we are indeed his offspring.