Ephesians 4:11-16 (ESV)
And he gave the apostles, the prophets, the evangelists, the shepherds and teachers, to equip the saints for the work of ministry, for building up the body of Christ, until we all attain to the unity of the faith and of the knowledge of the Son of God, to mature manhood, to the measure of the stature of the fullness of Christ, so that we may no longer be children, tossed to and fro by the waves and carried about by every wind of doctrine, by human cunning, by craftiness in deceitful schemes. Rather, speaking the truth in love, we are to grow up in every way into him who is the head, into Christ, from whom the whole body, joined and held together by every joint with which it is equipped, when each part is working properly, makes the body grow so that it builds itself up in love.
For a body to be healthy, we must eat right, exercise somewhat, not necessarily go to a gym, or something, but be active, our bodies work better when placed under the stress of physical exertion on a regular basis.
So it is with the Body of Christ, the Church. Here Paul is exhorting the church at Ephesus to become mature in Christ. We are to grow up in every way into Him Who is the head, into Christ...
This means that the leaders of the church must be about the business of Discipling (parenting) the younger members of the church. We must all seek to continue to grow into spiritual maturity. We must keep learning from one another, and challenge one another. This is also why Paul said that elders and deacons of the church should not be recent converts. To serve in leadership, a person should demonstrate maturity so that they can help others to grow as well.
So get your healthy food by reading God's Word daily. Spend time in prayer and learn from the Master. Check your understanding with others more mature than you. Pass on what you learn to others less mature than you. In this way, all the church will be healthy, growing together and growing into Christ.
by Virgil Stripes