How could Paul and the Jewish believers both serve the same God if they came in by different ways?
They serve the same God and the same Christ, though Jewish believers entered through the Kingdom economy and Kingdom Gospel while Paul moved in a different direction. The difference is not opposition; it is Law versus Grace, and Paul's ministry to the Gentiles extends Jesus' teachings rather than contradicting them.
Les explains that the Jewish believers had come in by virtue of the Kingdom economy and the Kingdom Gospel, while Paul was now going in a different direction—yet still serving the same God and the same Christ. Les stresses that this is not opposition but a difference: it is not under Law, it is under Grace. He points to Ephesians chapter 3 verse 1, where Paul calls himself the prisoner of Jesus Christ for the Gentiles, showing that Paul's message is an extension of Jesus' teachings, not a contradiction. Les also notes that theologians promote the idea that Paul opposed Jesus, because it makes for good book sales, but the reality is the same God and the same Christ.