We know we are transformed in Christ through the evidence of a new life and Spirit-led walk, as described in Scripture.
The transformation of a believer's life in Christ is evidenced by their walk, which should reflect the change brought about by the grace of God. As Paul articulates in Ephesians and reinforced in Romans 8, true believers are those who walk not after the flesh, but after the Spirit. This indicates that if one has truly been transformed by Christ, there will be a distinct difference in how they think and live, characterized by spiritual-mindedness rather than carnality. Moreover, the indwelling of the Holy Spirit assures believers that they belong to Christ, leading them in their daily conduct and aligning their desires with God's will.
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