Then Paul stood in the midst of the Areopagus and said, “Men of Athens, I perceive that in all things you are very religious; for as I was passing through and considering the objects of your worship, I even found an altar with this inscription:
TO THE UNKNOWN GOD.
Therefore, the One whom you worship without knowing, Him I proclaim to you: God, who made the world and everything in it, since He is Lord of heaven and earth, does not dwell in temples made with hands.
(Acts 17:22-24) NKJV
It’s one thing to talk about God with Christians, they know God from the Bible. It’s something else to talk with people who don’t go to church and whose knowledge of God comes from atheist propaganda.