What does the Bible say about the justification of Gentiles?

In Romans 3:29-30, the Apostle Paul clearly states that God is the God of both Jews and Gentiles, emphasizing that justification comes through faith for all His elect, regardless of their background. Both the circumcised (Jews) and the uncircumcised (Gentiles) are justified in the same manner. Furthermore, in Romans 4, Paul illustrates this by referring to Abraham, who was justified by faith before he was circumcised. This pivotal understanding underscores that justification is not contingent on works or observing the law but solely through faith in Christ.