There were multiple apostles, but there is only one gospel. Peter was entrusted with the gospel to the circumcised, Paul, to the uncircumcised, but this speaks not of two gospels, but of the one gospel being preached by both despite distinct ministries. Phil Ryken comments, “The church can allow diversity of mission only where there is unity of message.”
Today this has been inverted. So many act as if we are all on the same mission despite the variety of messages. Paul is at pains in the first part of his letter to the Galatians to establish his apostleship and the gospel on which it was centered. In 2:1–10 he goes on to demonstrate that when the apostles compared notes, it was clear that were all sitting under the same teacher—Jesus Christ. Their gospel math was identical. Jesus is everything. Add anything to Jesus, and you lose Jesus.
There is the gospel and there are other gospels, which are no gospels. When one preaches Christ, even out of envy or ambition, Paul rejoices (Philippians 1:15–18). When one preaches a perversion of Christ, Paul pronounces a divine curse on them (Galatians 1:8–9).
The apostles didn’t lay multiple-choice foundations, but one foundation, perfectly square with the cornerstone Jesus Christ (Ephesians 2:19–20). A shared name on the church sign doesn’t mean there is a shared foundation. With our eyes glued to the screens, we’ve failed to look down and see the cracks beneath and the abyss visible below. We are spectators instead of inspectors. If the crowd is big and the show is good, we assume all is well. Neil Postman was afraid that Western society was amusing itself to death. I’m afraid the western church is entertaining itself to hell. Yes, the gates of hell will not prevail against the church, but as I look at much of the modern church, judging by the foundation, she’s not the church anymore.