How do we know our adoption into God's family is true?

The validity of our adoption into the family of God is attested by the Holy Spirit Himself. Romans 8:16 teaches that the Spirit bears witness with our spirit, affirming our status as God's children. This is not a mere human assurance; rather, it is a divine conviction that transcends any external testimonies. The Spirit works within us, renewing our hearts and enlightening our understanding so that we may know and believe in the truth of our adoption. Without this inner testimony from the Holy Spirit, any claim to our sonship remains fragile and prone to doubt, making it essential for every believer to seek this assurance directly from God Himself.