We know we are God's children through the testimony of the Holy Spirit within us, affirming our identity in Christ.
According to Romans 8:16, the Spirit bears witness with our spirit that we are the children of God. This assurance is not based on our outward actions or the obedience we display but is a supernatural revelation given by the Spirit. The transformation brought about by the Holy Spirit enables believers to cry out 'Abba, Father,' signifying a deep, personal relationship with God. The stability of our identity as God's children rests on His grace and the work of Christ, not on our fluctuating behaviors. Thus, our assurance comes from the inner testimony of the Spirit that aligns with the truth of Scripture.
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