What does the Bible say about the church's unity in Christ?

The church is described as a singular entity that collectively follows Christ, despite being made up of flawed individuals. In the sermon, it is noted that, historically, divisions and issues within churches have existed; however, the commonality among true believers is their shared focus on Christ. The preacher emphasizes that rather than seeking a 'good church,' believers should search for Christ, as a genuine church will reflect a unity centered around Him. Ephesians 4:4-6 highlights this unity: 'There is one body and one Spirit, just as you were called to the one hope that belongs to your call.'