(Rom 12:2) And be not conformed to this world: but be ye transformed by the renewing of your mind, that ye may prove what is that good, and acceptable, and perfect, will of God.
Heb 6:1-2 Therefore leaving the principles of the doctrine of Christ, let us go on unto perfection; not laying again the foundation of repentance from dead works, and of faith toward God, (2) Of the doctrine of baptisms, and of laying on of hands, and of resurrection of the dead, and of eternal judgment.
2Ti 2:15 Study to show thyself approved unto God, a workman that needeth not to be ashamed, rightly dividing the word of truth.
until we all may come to the unity of the faith and of the full knowledge of the Son of God, to a full-grown man, to the measure of the stature of the fullness of Christ, so that we may no longer be infants, being blown and carried about by every wind of doctrine, in the sleight of men, in craftiness to the deceit of error,
(Eph 4:13-14)