Church welcomes sinners (all are sinners) but rejects tolerance of sin; unity/love ≠acceptance of sinful behavior (e.g., trans movement, same-sex marriage).
All believers are one in Christ with equal standing/value, despite ethnic, socioeconomic, biological differences.
Ethnic (Jew/Gentile): Jews accountable via commandments; Gentiles via conscience (Romans 2); Jesus' light to both (Acts 26).
Socioeconomic (slave/free): 10-20% slaves in Roman Empire (prisoners of war, crime punishment, debt); Bible condemns slavery/slave traders (1 Timothy 1:10); instructs slaves to serve as unto Christ (Ephesians 6:5-8); Paul calls self "bondservant" (doulos) of Christ (Galatians 1:10).
Biological (male/female): Distinct roles—husbands love wives (Ephesians 5); wives respect husbands; men teach doctrine (1 Timothy 2); women mentor women (Titus 2).
What Paul Is Saying
Natural differences have no bearing on standing in Christ; all equal in God's family (Galatians 3:26-29).
Counters 1st-century Jewish prayer thanking God for not making one a Gentile/slave/woman.
Modern relevance: Culture denies differences (e.g., gender fluidity) or exploits them (race/class warfare); church must be diverse yet unified around Christ/Word, speaking truth in love.
Recommended: Interview with Patty Height ("I Thought I Was a Boy") on YouTube.