Paul's message here is a continuation of his argument that all humanity, regardless of cultural or religious background, is equally in need of God's grace. He asks rhetorically if Jews have any advantage over Gentiles in terms of righteousness, and answers emphatically that they do not. This statement serves to eliminate any sense of superiority based on heritage or religious law, emphasizing that sin affects everyone equally.
By stating that both Jews and Gentiles are under the power of sin, Paul is leveling the playing field, so to speak. This is a crucial point in his letter, as it sets the stage for the universality of the gospel message. The implication is that since all are equally sinful, all are equally in need of salvation, which is offered through Jesus Christ. This teaching encourages believers to approach one another with humility and compassion, recognizing that no one is inherently better than another. It also invites all people to seek forgiveness and transformation through faith, highlighting the inclusive nature of the Christian message.