How does the concept of being 'children of God' impact believers?

The term 'children of God' encapsulates the transformative experience of salvation. As seen in Romans 9:8, it is clear that not all who are born of flesh are considered children of God. The phrase signifies a spiritual rebirth and implies intimate fellowship with God, who called us His own in love. This status is not earned but given by God's grace, forming a deep-rooted assurance and comfort in the believer's life, encouraging continual rejoicing in His salvation and promises, as highlighted in Zechariah and reiterated in the New Testament.