1 Corinthians 3:1
Brothers, I was not able to speak to you as to spiritual men, but as fleshly men, as babes (infants) in Christ.
1 Corinthians 2:14-15
But the natural man does not receive the things of the Spirit of God. They are foolishness to him! He cannot know them, because they are spiritually discerned.
Romans 7:14
For we know that the law is spiritual. But I am fleshly and sold under sin.
1 Corinthians 2:6
How is it we speak wisdom among those who are mature, yet not the wisdom of this age, or of the rulers of this age, who come to nothing (are doomed to destruction)?
1 Corinthians 14:20
Brothers, do not be like children in understanding. When it comes to evil be innocent children but in your thinking be mature adults.
Galatians 6:1
Brothers, if someone is caught in any kind of wrongdoing, those of you who are spiritual should set him right. But you must do it in a gentle way. And keep an eye on yourselves, so that you will not be tempted, too.
Ephesians 4:13-14
until we all attain to the unity of the faith, and of the knowledge of the Son of God, to a full-grown (mature) man, to the measure of the stature of the fullness of Christ.
Hebrews 5:13
Everyone who drinks milk is unacquainted with the word of righteousness: for he is a babe.
Matthew 16:23
He turned to Peter and said: Get behind me, Satan. You are a stumbling block to me. You think the things of men, not of God.
1 Corinthians 3:3-4
You are still fleshly! There is envy, strife, and divisions among you. Do you not walk as ordinary men?
1 John 2:12
I write to you, my little children, because your sins are forgiven on account of his name.