What the Bible says about spiritual growth

Colossians 1:9-10

For this cause, we also, since the day we heard this, don’t cease praying and making requests for you, that you may be filled with the knowledge of his will in all spiritual wisdom and understanding, that you may walk worthily of the Lord, to please him in all respects, bearing fruit in every good work, and increasing in the knowledge of God;

1 Thessalonians 4:1

Finally then, brothers, we beg and exhort you in the Lord Jesus, that as you received from us how you ought to walk and to please God, that you abound more and more.

Proverbs 4:18

But the path of the righteous is like the dawning light, that shines more and more until the perfect day.

Ephesians 4:14-16

that we may no longer be children, tossed back and forth and carried about with every wind of doctrine, by the trickery of men, in craftiness, after the wiles of error; but speaking truth in love, we may grow up in all things into him, who is the head, Christ; from whom all the body, being fitted and knit together through that which every joint supplies, according to the working in measure of each individual part, makes the body increase to the building up of itself in love.

1 John 2:12-14

I write to you, little children, because your sins are forgiven you for his name’s sake. I write to you, fathers, because you know him who is from the beginning. I write to you, young men, because you have overcome the evil one. I write to you, little children, because you know the Father. I have written to you, fathers, because you know him who is from the beginning. I have written to you, young men, because you are strong, and the word of God remains in you, and you have overcome the evil one.

2 Timothy 2:2

The things which you have heard from me among many witnesses, commit the same to faithful men, who will be able to teach others also.

1 Corinthians 13:11

When I was a child, I spoke as a child, I felt as a child, I thought as a child. Now that I have become a man, I have put away childish things.

James 1:2-4

Count it all joy, my brothers, when you fall into various temptations, knowing that the testing of your faith produces endurance. Let endurance have its perfect work, that you may be perfect and complete, lacking in nothing.

Hebrews 5:11-14

About him we have many words to say, and hard to interpret, seeing you have become dull of hearing. For although by this time you should be teachers, you again need to have someone teach you the rudiments of the first principles of the revelations of God. You have come to need milk, and not solid food. For everyone who lives on milk is not experienced in the word of righteousness, for he is a baby. But solid food is for those who are full grown, who by reason of use have their senses exercised to discern good and evil.

Romans 12:1-2

Therefore I urge you, brothers, by the mercies of God, to present your bodies a living sacrifice, holy, acceptable to God, which is your spiritual service. Don’t be conformed to this world, but be transformed by the renewing of your mind, so that you may prove what is the good, well-pleasing, and perfect will of God.