6 Bible Verses about Middle Age

till we should all attain the unity of the faith and knowledge of God's Son, reaching maturity, reaching the full measure of development which belongs to the fulness of Christ ??14 instead of remaining immature, blown from our course and swayed by every passing wind of doctrine, by the adroitness of men who are dexterous in devising error;

We do discuss 'wisdom' with those who are mature; only it is not the wisdom of this world or of the dethroned Powers who rule this world,

On this point I have a great deal to say, which it is hard to make intelligible to you. For you have grown dull of hearing. Though by this time you should be teaching other people, you still need someone to teach you once more the rudimentary principles of the divine revelation. You are in need of milk, not of solid food. (For anyone who is fed on milk is unskilled in moral truth; he is a mere babe.read more.
Whereas solid food is for the mature, for those who have their faculties trained by exercise to distinguish good and evil.)

only, let your endurance be a finished product, so that you may be finished and complete, with never a defect.

And the child grew, he became strong in the Spirit and remained in the desert till the day when he made his appearance before Israel.

And the child grew and became strong; he was filled with wisdom, and the favour of God was on him.