Ephesians 4:14-16

14.As a result, we are no longer to be children, tossed here and there by waves and carried about by every wind of doctrine, by the trickery of men, by craftiness in deceitful scheming ;
15.but speaking the truth in love, we are to grow up in all aspects into Him who is the head, even Christ,
16.from whom the whole body, being fitted and held together by what every joint supplies, according to the proper working of each individual part, causes the growth of the body for the building up of itself in love.

I like this passage because it is talks about how the Christian belongs to a family, and it continues the theme of the greatness of the love of Christ. It also has to do with how we live our lives as Christians.

There is a beautiful progression in these verses. At first, Paul describes Christians as children, tossed about and blown every which way by differing thoughts and arguments over doctrine and deceptions. But, by the powerful love of Christ, we can move on from confusion to certainty. As we speak the truth of Christ in the love of Christ, we will grow together in unity and mature in ministry. And we are always growing into Christ, our head. Everything we need for life in the body is found in Christ. He is the One who is full of grace and truth. He is the One who enables us to speak the truth in love. He is the One who supplies the body and causes its growth in love.

The love of Christ is the foundation for the change in nature we experience as Christians. In Ephesians 4:1-13, just before this passage, Paul is describing the characteristics and gifts of the Christian. Just after this passage, Paul says that because we are no longer children and we are being built up as one body in the love of Christ, we should no longer live our lives according to the old nature.