New Revised Standard Version
Many shall be purified, cleansed, and refined, but the wicked shall continue to act wickedly. None of the wicked shall understand, but those who are wise shall understand.

Contemporary English Version
Many people will have their hearts and lives made pure and clean, but those who are evil will keep on being evil and never understand. Only the wise will understand.

New American Bible
Many shall be refined, purified, and tested, but the wicked shall prove wicked; the wicked shall have no understanding, but those with insight shall.

Douay-Rheims Bible
Many shall be chosen, and made white, and shall be tried as fire: and the wicked shall deal wickedly, and none of the wicked shall understand, but the learned shall understand.

Many shall be chosen, and made white, and shall be tried as fire: and the wicked shall deal wickedly, and none of the wicked shall understand, but the learned shall understand.

shall be.

Daniel 11:35 And some of the learned shall fall, that they may be tried, and may be chosen, and made white, even to the appointed time: because yet there shall be another time.

Psalm 51:7 Thou shalt sprinkle me with hyssop, and I shall be cleansed: thou shalt wash me, and I shall be made whiter than snow.

Isaiah 1:18 And then come, and accuse me, saith the Lord: if your sins be as scarlet, they shall be made as white as snow: and if they be red as crimson, they shall be white as wool.

Ezekiel 36:25 And I will pour upon you clean water, and you shall be cleansed from all your filthiness, and I will cleanse you from all your idols.

Zechariah 13:9 And I will bring the third part through the fire, and will refine them as silver is refined: and I will try them as gold is tried. They shall call on my name, and I will hear them. I will say: Thou art my people: and they shall say: The Lord is my God.

1 Corinthians 6:11 And such some of you were. But you are washed: but you are sanctified: but you are justified: in the name of our Lord Jesus Christ and the Spirit of our God.

2 Corinthians 7:1 Having therefore these promises, dearly beloved, let us cleanse ourselves from all defilement of the flesh and of the spirit, perfecting sanctification in the fear of God.

Titus 2:14 Who gave himself for us, that he might redeem us from all iniquity and might cleanse to himself a people acceptable, a pursuer of good works.

Hebrews 12:10 And they indeed for a few days, according to their own pleasure, instructed us: but he, for our profit, that we might receive his sanctification.

1 Peter 1:7,22 That the trial of your faith (much more precious than gold which is tried by the fire) may be found unto praise and glory and honour at the appearing of Jesus Christ. . . .

Revelation 3:18 I counsel thee to buy of me gold, fire tried, that thou mayest be made rich and mayest be clothed in white garments: and that the shame of thy nakedness may not appear. And anoint thy eyes with eyesalve, that thou mayest see.

Revelation 7:13,14 And one of the ancients answered and said to me: These that are clothed in white robes, who are they? And whence came they? . . .

Revelation 19:8,14 And it is granted to her that she should clothe herself with fine linen, glittering and white. For the fine linen are the justifications of saints. . . .

but the wicked.

1 Samuel 24:13 As also it is said in the old proverb: From the wicked shall wickedness come forth: therefore my hand shall not be upon thee. After whom dost thou come out, O king of Israel?

Isaiah 32:6,7 For the fool will speak foolish things, and his heart will work iniquity, to practise hypocrisy, and speak to the Lord deceitfully, and to make empty the soul of the hungry, and take away drink from the thirsty. . . .

Ezekiel 47:11 But on the shore thereof, and in the fenny places they shall not be healed, because they shall be turned into saltpits.

Hosea 14:9 Who is wise, and he shall understand these things? prudent, and he shall know these things? for the ways of the Lord are right, and the just shall walk in them: but the transgressors shall fall in them.

Romans 11:8-10 As it is written: God hath given them the spirit of insensibility; eyes that they should not see and ears that they should not hear, until this present day. . . .

2 Thessalonians 2:10-12 And in all seduction of iniquity to them that perish: because they receive not the love of the truth, that they might be saved. Therefore God shall send them the operation of error, to believe lying: . . .

Revelation 9:20,21 And the rest of the men, who were not slain by these plagues, did not do penance from the works of their hands, that they should not adore devils and idols of gold and silver and brass and stone and wood, which neither can see nor hear nor walk: . . .

Revelation 16:11 And they blasphemed the God of heaven, because of their pains and wounds: and did not penance for their works.

Revelation 22:11 He that hurteth, let him hurt still: and he that is filthy, let him be filthy still: and he that is just, let him be justified still: and he that is holy, let him be sanctified still.

but the wise.

Daniel 11:33,35 And they that are learned among the people shall teach many: and they shall fall by the sword, and by fire, and by captivity, and by spoil for many days. . . .

Psalm 107:43 Who is wise, and will keep these things; and will understand the mercies of the Lord?

Proverbs 1:5 He shall understand a parable and the interpretation, the words of the wise, and their mysterious sayings.

Proverbs 2:1-5 That thy ear may hearken to wisdom: incline thy heart to know prudence. . . .

Mark 4:11 And he said to them: To you it is given to know the mystery of the kingdom of God: but to them that are without, all things are done in parables:

Luke 24:25 Then he said to them: O foolish and slow of heart to believe in all things, Which the prophets have spoken.

John 7:17 If any man will do the will of him, he shall know of the doctrine, whether it be of God, or whether I speak of myself.

John 8:47 He that is of God heareth the words of God. Therefore you hear them not, because you are not of God.

John 18:37 Pilate therefore said to him: Art thou a king then? Jesus answered: Thou sayest that I am a king. For this was I born, and for this came I into the world; that I should give testimony to the truth. Every one that is of the truth heareth my voice.

1 Corinthians 2:10-16 But to us God hath revealed them by his Spirit. For the Spirit searcheth all things, yea, the deep things of God. . . .

1 John 5:20 And we know that the Son of God is come. And he hath given us understanding that we may know the true God and may be in his true Son. This is the true God and life eternal.