What does it mean to be fellow heirs according to the gospel?

To be fellow heirs in the context of the gospel signifies that both Jews and Gentiles have been invited into a relationship with God through Christ, sharing in the inheritance of His promises. Ephesians 3:6 states that the Gentiles are fellow heirs, which means they are co-participants in the blessings and covenant made with Abraham and fulfilled in Christ. This unity highlights God's redemptive plan to bring together all nations under one body in Christ, overcoming divisions and enmities. Thus, every believer, regardless of background, enjoys the same spiritual heritage and hope of eternal life in Him.