Ephesians 4:15

12 for the perfecting of the saints, unto the work of ministering, unto the building up of the body of Christ:

13 till we all attain unto the unity of the faith, and of the knowledge of the Son of God, unto a fullgrown man, unto the measure of the stature of the fulness of Christ:

14 that we may be no longer children, tossed to and fro and carried about with every wind of doctrine, by the sleight of men, in craftiness, after the wiles of error;

15 but speaking truth in love, we may grow up in all things into him, who is the head, [even] Christ;

16 from whom all the body fitly framed and knit together through that which every joint supplieth, according to the working in [due] measure of each several part, maketh the increase of the body unto the building up of itself in love.

17 This I say therefore, and testify in the Lord, that ye no longer walk as the Gentiles also walk, in the vanity of their mind,

18 being darkened in their understanding, alienated from the life of God, because of the ignorance that is in them, because of the hardening of their heart;