Romans 1:21

Because knowing God, they did not glorify him as God, neither were thankful, but became vain in their reasonings, and their foolish heart was darkened.

Ephesians 4:17-18

This therefore I say and testify in the Lord, that ye no longer walk as the rest of the Gentiles, in the vanity of your mind:

Romans 1:19

For what is to be known of God, is manifest in them; for God hath shewed it to them.

Revelation 14:7

and tribe, and tongue, and people, Saying with a loud voice, Fear God and give glory to him, for the hour of his judgment is come: and worship him that made the heaven, and the earth, and the sea, and fountains of water.

Luke 17:15-18

And one of them, when he saw that he was healed, turned back and with a loud voice glorified God.

John 3:19

And this is the condemnation, that light is come into the world, and men loved darkness rather than light, because their deeds were evil.

Romans 1:28

And as they were not careful to retain God in their knowledge, God gave them up to an undiscerning mind, to do things not expedient, Filled with all injustice, maliciousness, covetousness, wickedness:

Romans 11:10

Let their eyes be darkened that they may not see, and bow down their back alway.

Romans 15:9

And that the Gentiles might glorify God for his mercy, as it is written, For this cause I will confess to thee among the Gentiles, and sing unto thy name.

2 Timothy 3:2

For men will be lovers of themselves, lovers of money, arrogant, proud, evil-speakers,

1 Peter 1:18

Seeing ye know ye were not redeemed with corruptible things, as silver and gold, from your vain conversation delivered by tradition from your fathers,

1 Peter 2:9

But ye are a chosen race, a royal priesthood, an holy nation, a purchased people, that ye may shew forth the virtues of him who hath called you out of darkness into his marvellous light: Who in time past were not a people, but now are the people of God;

Revelation 15:4

Who would not fear thee, O Lord, and glorify thy name? For thou only art gracious: for all the nations shall come and worship before thee: for thy judgments are made manifest.

Acts 26:18

and the Gentiles, to whom I now send thee, To open their eyes, that they may turn from darkness to light, and from the power of Satan to God; that they may receive through faith which is in me, forgiveness of sins, and an inheritance among them that are sanctified.

Treasury of Scripture Knowledge

Summary

Because that, when they knew God, they glorified him not as God, neither were thankful; but became vain in their imaginations, and their foolish heart was darkened.

General references

Bible References

When

Romans 1:19
For what is to be known of God, is manifest in them; for God hath shewed it to them.
John 3:19
And this is the condemnation, that light is come into the world, and men loved darkness rather than light, because their deeds were evil.

They glorified

Romans 15:9
And that the Gentiles might glorify God for his mercy, as it is written, For this cause I will confess to thee among the Gentiles, and sing unto thy name.
Luke 17:15
And one of them, when he saw that he was healed, turned back and with a loud voice glorified God.
2 Timothy 3:2
For men will be lovers of themselves, lovers of money, arrogant, proud, evil-speakers,
Revelation 14:7
and tribe, and tongue, and people, Saying with a loud voice, Fear God and give glory to him, for the hour of his judgment is come: and worship him that made the heaven, and the earth, and the sea, and fountains of water.
Revelation 15:4
Who would not fear thee, O Lord, and glorify thy name? For thou only art gracious: for all the nations shall come and worship before thee: for thy judgments are made manifest.

But became

Ephesians 4:17
This therefore I say and testify in the Lord, that ye no longer walk as the rest of the Gentiles, in the vanity of your mind:
1 Peter 1:18
Seeing ye know ye were not redeemed with corruptible things, as silver and gold, from your vain conversation delivered by tradition from your fathers,

Their foolish

Romans 11:10
Let their eyes be darkened that they may not see, and bow down their back alway.
Acts 26:18
and the Gentiles, to whom I now send thee, To open their eyes, that they may turn from darkness to light, and from the power of Satan to God; that they may receive through faith which is in me, forgiveness of sins, and an inheritance among them that are sanctified.
1 Peter 2:9
But ye are a chosen race, a royal priesthood, an holy nation, a purchased people, that ye may shew forth the virtues of him who hath called you out of darkness into his marvellous light: Who in time past were not a people, but now are the people of God;

General references

James 4:17
Therefore to him that knoweth to do good and doeth it not, to him it is sin.