Christians are eternally united to Christ by faith. We become a child of God and are positioned in Christ at rebirth. At salvation, we receive the indwelling Holy Spirit as a guarantee of our eternal life and heavenly inheritance until the redemption of the purchased possession - until we are raptured into His presence. There are many precious promises that become ours, the moment we trust in Christ as the sacrifice for our sin.
Christians are declared righteous by faith in Christ and once we are saved, there is nothing that can remove us from our redeemed status - nothing that can cancel God's glorious promises to us. However, sin is a barrier that can fracture our relationship with the Lord. If a child of God sins, then fellowship with our Heavenly Father is broken - BUT if we confess our sins, God is faithful and just to forgive us our sins and cleanse us from all unrighteousness.
