What does the Bible say about the diversity of God's grace?

In Revelation 5:9, we see a depiction of great diversity in God's people, as they are redeemed from every kindred, tongue, people, and nation. This illustrates that God's elect encompass every background, socio-economic status, and cultural distinction imaginable. Such diversity isn't merely a sociological observation; it's a divine sovereignty in action, where God graciously chooses individuals from all walks of life. This means that God's grace transcends human barriers and divisions, creating a unified family of believers who share the same faith and purpose in Christ.