Hebrews 5:14

Whereas solid food is for the mature, for those who have their faculties trained by exercise to distinguish good and evil.)

1 Corinthians 2:6

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,

Ephesians 4:13

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;

Romans 14:1

Welcome a man of weak faith, but not for the purpose of passing judgment on his scruples.

Matthew 5:48

You must be perfect as your heavenly Father is perfect.

Matthew 6:22-23

The eye is the lamp of the body: so, if your Eye is generous, the whole of your body will be illumined,

1 Corinthians 2:14-15

The unspiritual man rejects these truths of the Spirit of God; to him they are 'sheer folly,' he cannot understand them. And the reason is, that they must be read with the spiritual eye.

Ephesians 1:18

illuminating the eyes of your heart so that you can understand the hope to which He calls us, the wealth of his glorious heritage in the saints,

Philippians 1:9-10

And it is my prayer that your love may be more and more rich in knowledge and all manner of insight, enabling you to have a sense of what is vital,

Philippians 3:15

For all those of our number who are mature, this must be the point of view; God will reveal that to any of you who look at things differently.

1 Thessalonians 5:21

but test them all, retaining what is good

James 3:2

We all make many a slip, but whoever avoids slips of speech is a perfect man; he can bridle the whole of the body as well as the tongue.

Treasury of Scripture Knowledge

Summary

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.

Bible References

Their

Matthew 6:22
The eye is the lamp of the body: so, if your Eye is generous, the whole of your body will be illumined,
Ephesians 1:18
illuminating the eyes of your heart so that you can understand the hope to which He calls us, the wealth of his glorious heritage in the saints,

To discern

Romans 14:1
Welcome a man of weak faith, but not for the purpose of passing judgment on his scruples.
Philippians 1:9
And it is my prayer that your love may be more and more rich in knowledge and all manner of insight, enabling you to have a sense of what is vital,