How do we know the unity of the church is true?

The unity within the church is grounded in the grace of God, which unites a diverse body of believers across various backgrounds and experiences. Ephesians 4:4-6 states, 'There is one body and one Spirit, just as you were called to the one hope that belongs to your call; one Lord, one faith, one baptism; one God and Father of all, who is over all and through all and in all.' This unity is not dependent on external factors such as social or cultural similarities but is rooted in the shared experience of salvation by grace through faith in Christ. This is why, despite their differences, believers are able to come together and serve as one body in Christ, promoting love and mutual encouragement among one another.