We should no longer be children, tossed to and fro and carried about with every wind of doctrine, by the trickery of men, in the cunning craftiness of deceitful plotting; But, speaking the truth in love may grow up in all things into Him who is the head – Christ – From whom the whole body, joined and knit together by what every joint supplies, according to the effectual working by which every part does its share, causes growth of the body for the edifying of itself in love (Eph. 4: 14-16) NKJV.
In these verses, Paul speaks of maturity once and of building up or growing up four times more. It means that for Paul, God's chief purpose for the church is that it might become full- grown and that each member might contribute to that maturity by becoming a spiritual adult.
"That it is not only wise to be spiritually healthy, but Christians should influence their communities through effective means of connection (Matt. 5:13, 16).
The purpose of The Fundamentals of Spiritual Growth study material, is to guide in this direction.