 I love that passage in 1 Corinthians chapter 14 where the Apostle Paul is talking about the church functioning as the church. People exercising their spiritual gifts, worshiping God, functioning together in love and in oneness under the ministry of the word, etc. And then it says, when a lost man comes into your congregation, a seeker, he will fall on his face and worship God and report that God is in you of a truth.