Colossians Chapter 4 - Marianne Manley

Why were members of the circumcision helping Paul save people into the body of Christ? Because they knew that Jews can now have eternal life in heaven, if they believe the same gospel that the Gentiles need to believe (1 Cor. 15:3, 4).
After Acts 15 the kingdom on earth was closed off to new converts. Many kingdom saints (such as Barnabas, Silas, Mark, Luke, Junia, Andronicus, Justus, and others) then began heling God by helping Paul save members into the body of Christ. There has not been any kingdom on earth saints since the first century.
Every person that is saved during by Paul’s gospel during the dispensation of grace will live in heaven.
How do we love others?
Once awakened to the right gospel and the mystery, then we share it.