re: "Christians didn't invent marriage. Why do they think they can define it."

quote:

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Making disciples is a personal undertaking that takes time and relationship.

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So when Paul preached at Mars Hill, how many of those thousands did he have a personal relationship with?

I largely agree with your point. But the public proclamation of the Gospel, even in large settings, has Scriptural support. And cannot simply be excluded from our lives because it's socially awkward.