When you read Acts chapter 2, this is the beginning of the church of Christ. Souls were baptized, and "The Lord added to the church daily those who were being saved." Acts 2:47
In Romans 16:16, it says "The churches of Christ greet you."
Jesus Christ! No man is worthy to found the church that Christ died for.
Matthew 16:18 says, You are Peter, and on this rock I will build My church.
Christ started building his own church, through his teachings and the teachings of his apostles. The gospel that Christ taught, and his apostles taught, is the same gospel that we follow today!