How do we know the doctrine of unity in Christ is true?

The doctrine of unity in Christ is substantiated by various scriptural references that teach about the oneness of the body of Christ. Paul, in 1 Corinthians 1:10, urges believers to be perfectly joined together in the same mind and judgment, indicating that true unity is achieved when Christ is central to their faith. Ephesians 4:4-6 also declares that there is one body and one Spirit, signifying that all believers share in the same foundation through Christ. When believers recognize that Christ is all in salvation and life, they can experience genuine unity amidst diversity.