Grow up in Christ
“But grow in the grace and knowledge of our Lord and Savior Jesus Christ. To him be the glory both now and to the day of eternity. Amen.” (2 Peter 3:18 ESV)
Grow up in the fullness of Christ so you won’t be tossed to and fro
“Until we all attain to the unity of the faith and of the knowledge of the Son of God, to mature manhood, to the measure of the stature of the fullness of Christ, so that we may no longer be children, tossed to and fro by the waves and carried about by every wind of doctrine, by human cunning, by craftiness in deceitful schemes. Rather, speaking the truth in love, we are to grow up in every way into him who is the head, into Christ, from whom the whole body, joined and held together by every joint with which it is equipped, when each part is working properly, makes the body grow so that it builds itself up in love.” (Eph. 4:13-16 ESV)
Immerse yourself in these things and practice them
“Practice these things, immerse yourself in them, so that all may see your progress.” (1 Tim. 4:15 ESV)
You ought to be teachers
“For though by this time you ought to be teachers, you need someone to teach you again the basic principles of the oracles of God. You need milk, not solid food, for everyone who lives on milk is unskilled in the word of righteousness, since he is a child. But solid food is for the mature, for those who have their powers of discernment trained by constant practice to distinguish good from evil.” (Heb. 5:12-14 ESV)
Therefore…
“And though your beginning was small, your latter days will be very great.”(Job 8:7 ESV)
“And it is my prayer that your love may abound more and more, with knowledge and all discernment…” (Phil. 1:9 ESV)