How do we know that Christians are part of God's family?

The assurance that Christians are part of God's family is rooted in their obedience to God's will and their faith in Jesus Christ. In John 1:12, it is stated that those who receive Him are given the right to become children of God. This affirmation highlights that spiritual rebirth results in inclusion within God's family. Furthermore, believers are seen as brothers and sisters of Christ, marking their new identity. The New Testament consistently reinforces that our connection to God and one another is forged through faith, making the church a family bound by love and commitment to the teachings of Christ.