But strong meat belongeth to them that are of full age, even those who by reason of use have their senses exercised to discern both good and evil.
The author of Hebrews — a letter written to early Jewish Christians — compares spiritual growth to physical development. Just as babies need milk but adults eat solid food, new believers start with basic teachings while mature ones can handle deeper, more complex truths. 'Constant use' means actively applying God's Word to real decisions, not merely reading it. The Greek word translated 'trained' is gymnazō — the same root as our word 'gymnasium' — suggesting that discernment is built through repeated, effortful practice, not passive exposure. Over time, this training sharpens a person's ability to distinguish between what is truly good and what only appears to be.
Lord, I don't want to stay comfortable forever. Train me — even when the training is hard. Help me not just read Your Word but let it work on me, shape me, and sharpen my ability to see clearly what is truly good. Grow me past milk. Amen.
There's something humbling about realizing that discernment — the ability to tell real good from convincing counterfeits — isn't handed to you at conversion. It's a muscle. It's built through reps: making choices, getting them wrong, returning to Scripture, praying through the mess, and slowly learning to recognize the difference between wisdom and rationalization. Maturity in this verse isn't about age or how long you've been a Christian. It's about what you've actually done with what you've been given. Think about what you're currently feeding on spiritually. Are you still subsisting on the same handful of truths you first learned, or have you let your appetite grow? Maturity doesn't mean complexity for its own sake — it means you've done enough living and praying and failing that God's Word has moved from your head into your bones. What hard question are you currently avoiding? What passage makes you uncomfortable because it asks something specific of you? That tension might be exactly where the solid food is waiting.
What do you think 'constant use' actually looks like day to day — not just on Sundays or in a Bible study, but in the ordinary decisions you face each week?
Where in your own life have you noticed your spiritual discernment growing? What experiences, failures, or difficult seasons helped shape it?
Is it possible to stay spiritually immature on purpose — to avoid the discomfort of being challenged by harder truths? What might motivate someone to stay on milk?
How does your own level of spiritual maturity or immaturity affect the people closest to you — your family, friends, or community?
What is one hard teaching or uncomfortable question you have been avoiding? What would it look like to actually wrestle with it this week instead of setting it aside?
Study to shew thyself approved unto God, a workman that needeth not to be ashamed, rightly dividing the word of truth.
2 Timothy 2:15
Now no chastening for the present seemeth to be joyous, but grievous: nevertheless afterward it yieldeth the peaceable fruit of righteousness unto them which are exercised thereby .
Hebrews 12:11
But he that is spiritual judgeth all things, yet he himself is judged of no man.
1 Corinthians 2:15
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,
Hebrews 6:1
Give therefore thy servant an understanding heart to judge thy people, that I may discern between good and bad: for who is able to judge this thy so great a people?
1 Kings 3:9
That we henceforth be no more children, tossed to and fro, and carried about with every wind of doctrine, by the sleight of men, and cunning craftiness , whereby they lie in wait to deceive;
Ephesians 4:14
But the natural man receiveth not the things of the Spirit of God: for they are foolishness unto him: neither can he know them, because they are spiritually discerned.
1 Corinthians 2:14
Prove all things; hold fast that which is good.
1 Thessalonians 5:21
But solid food is for the [spiritually] mature, whose senses are trained by practice to distinguish between what is morally good and what is evil.
AMP
But solid food is for the mature, for those who have their powers of discernment trained by constant practice to distinguish good from evil.
ESV
But solid food is for the mature, who because of practice have their senses trained to discern good and evil.
NASB
But solid food is for the mature, who by constant use have trained themselves to distinguish good from evil.
NIV
But solid food belongs to those who are of full age, that is, those who by reason of use have their senses exercised to discern both good and evil.
NKJV
Solid food is for those who are mature, who through training have the skill to recognize the difference between right and wrong.
NLT
solid food is for the mature, who have some practice in telling right from wrong.
MSG