How do we know Christ is speaking in us?

Paul asserts in 2 Corinthians 13:3 that Christ speaks through him, emphasizing the power of God evident in his ministry and among the Corinthians. This power is not weak but active and life-transforming in believers. The presence of Christ in the life of a believer is marked by a desire to live according to His teachings and the transformative work of the Holy Spirit. When Christ is truly in us, we will manifest a genuine pursuit of holiness and a responsiveness to His will, demonstrating the might of God in our lives, just as He resurrected Jesus from weakness into life.