How can we discern churches that are in Christ?

Discerning churches that are in Christ involves evaluating their adherence to biblical truth and the gospel of grace. A church that preaches the true gospel—acknowledging salvation by grace through faith in Christ alone—demonstrates being in Christ. Furthermore, the doctrines upheld by the church, such as the nature of Christ, His atoning sacrifice, and the authority of Scripture, are critical markers. Paul highlighted that the churches of Judea were in Christ, not simply because they bore the name 'church,' but because they preached and believed the true faith. Thus, careful examination of a church's teachings and practices in light of Scripture is essential for discerning its authenticity.