Those in whom there is whole-hearted reception and conformity to His sonship are those who will, as sons and daughters, enter in to the fullness of the Father’s heavenly realm.
Luke 8:21 (NIV)
21 He replied, "My mother and brothers are those who hear God's word and put it into practice."
Mark 3:33-35 (NIV)
33 "Who are my mother and my brothers?" he asked.
34 Then he looked at those seated in a circle around him and said, "Here are my mother and my brothers!
35 Whoever does God's will is my brother and sister and mother."
Romans 8:13-17 (NIV)
13 For if you live according to the flesh, you will die; but if by the Spirit you put to death the misdeeds of the body, you will live.
14 For those who are led by the Spirit of God are the children of God.
15 The Spirit you received does not make you slaves, so that you live in fear again; rather, the Spirit you received brought about your adoption to sonship. And by him we cry, "Abba, Father."
16 The Spirit himself testifies with our spirit that we are God's children.
17 Now if we are children, then we are heirs—heirs of God and co-heirs with Christ, if indeed we share in his sufferings in order that we may also share in his glory.
There was once a first-born prince, who, according to birthright, would not only inherit his father’s throne, but all the riches and benefits that would come with royalty. His father the king loved his son very deeply and had prepared for his full succession to the throne. As the son began to mature, however, instead of following the example of his father in living to love and serve the people he would rule, he began to associate with young people who dishonored, abused and took advantage of them. Though born a prince, his persistent actions that were inconsistent with his royal status eventually disqualified him from ascending to the throne. His younger sibling, who willfully discovered and followed the heart of his father as if it was his own was given the role his elder had been born to fulfill.
In Christ we have the opportunity to become adopted sons and daughters of the King. By accepting Him as our Lord we are taken from the kingdom of darkness and translated into the Kingdom of Light. While the Father has planned for our succession to kingship, ruling and reigning with Him, there is yet a part we must play in order to participate in His plan. He has done so much to make us part of the kingdom family, but until our belief in His work is demonstrated in our choice of action, until we have left following the world to seek His kingdom, our place in His family, though secured in Christ, is not yet fully received and applied. Sharing in His inheritance comes with sharing in His refusal of servitude to other dominions. Those in whom there is whole-hearted reception and conformity to His sonship are those who will, as sons and daughters, enter in to the fullness of the Father’s heavenly realm.