Hebrews 5:14
But solid food is for adults, that is, for those who by constant practise have their faculties trained to discriminate between good and evil.
1 Corinthians 2:6
Notwithstanding, among those who are mature I do teach philosophy; though not the philosophy of the present age, nor of its rulers who are coming to nought.
Romans 14:1
Welcome a man of weak faith, but not for the purpose of deciding doubtful points.
Matthew 5:48
"You then must be perfect, as your heavenly Father is perfect."
Matthew 6:22-23
"The lamp of the body is the eye. Therefore if your eye is sound, your whole body will be well lighted;
1 Corinthians 2:14-15
The unspiritual man rejects the teachings of God's Spirit; for him it is folly. He cannot understand it, for it is spiritually discerned,
Ephesians 1:18
and that the eyes of your heart may be flooded with light so that you may understand what is the hope of his calling, what the wealth of the glory of his inheritance in the saints,
Philippians 1:9-10
And it is my prayer that your love may abound yet more and more in intelligence and insight
Philippians 3:15
Let us all then, who are mature Christians, strive for this! God will make this clear to any of you who are striving for other goals;
1 Thessalonians 5:21
But try all, holding fast to the good.
James 3:2
For in many respects we often stumble. If any man never stumbles in speech, the same is a perfect man, able to bridle the whole body as well.