How do we know that we have truly received Christ?

The evidence of having received Christ often manifests in a person's life as a new identity in Him. Believers will exhibit a change in desires, actions, and beliefs that reflect their new life in Christ. In John 3:21, Jesus states that those who do truth come to the light, allowing their deeds to be shown as wrought in God. This transformation brings about a warfare between the flesh and the spirit, as indicated in 2 Corinthians 3, leading to a manifestation of God’s work in the believer's life. If one continues in their need of His grace from the beginning to the end, they can have assurance that they are among the receivers of Christ.