Early Christians were drawn together by their love of Christ and each other. Most were just hard working average people who had little education and no understanding of the philosophies of the world. The gospel message of the kingdom and the future hope of life everlasting were the basis of their simple faith. This changed when the leaders try to compete with those worldly "wise men" and introduced philosophical teachings into the church that reflected the "wisdom of this world." It is astounding how fast this occurred after the death of the apostles and early disciples. But this was exactly what Jesus and the early Bible writers foretold.
I wonder how many Christians today care about or understand the intellectual discussions of doctrine? The real appeal remains the same today as in the first century: Love of Christ and the love of each other.