James 2:20

And dost thou wish to know, O vain man, that the faith apart from the works is dead?

James 2:26

for as the body apart from the spirit is dead, so also the faith apart from the works is dead.

Job 11:11-12

For he hath known men of vanity, And He seeth iniquity, And one doth not consider it!

Psalm 94:8-11

Consider, ye brutish among the people, And ye foolish, when do ye act wisely?

Proverbs 12:11

Whoso is tilling the ground is satisfied with bread, And whoso is pursuing vanities is lacking heart,

Jeremiah 2:5

Thus said Jehovah: What -- have your fathers found in Me perversity, That they have gone far off from Me, And go after the vanity, and become vain,

Romans 1:21

because, having known God they did not glorify Him as God, nor gave thanks, but were made vain in their reasonings, and their unintelligent heart was darkened,

1 Corinthians 15:35-36

But some one will say, 'How do the dead rise?

Galatians 5:6

for in Christ Jesus neither circumcision availeth anything, nor uncircumcision, but faith through love working.

Galatians 6:3

for if any one doth think himself to be something -- being nothing -- himself he doth deceive;

Colossians 2:8

See that no one shall be carrying you away as spoil through the philosophy and vain deceit, according to the deliverance of men, according to the rudiments of the world, and not according to Christ,

1 Timothy 1:6

from which certain, having swerved, did turn aside to vain discourse,

Titus 1:10

for there are many both insubordinate, vain-talkers, and mind-deceivers -- especially they of the circumcision --

James 1:26

If any one doth think to be religious among you, not bridling his tongue, but deceiving his heart, of this one vain is the religion;

James 2:17

so also the faith, if it may not have works, is dead by itself.

Treasury of Scripture Knowledge

Summary

But wilt thou know, O vain man, that faith without works is dead?

That

General references

Bible References

O vain

James 1:26
If any one doth think to be religious among you, not bridling his tongue, but deceiving his heart, of this one vain is the religion;
Job 11:11
For he hath known men of vanity, And He seeth iniquity, And one doth not consider it!
Psalm 94:8
Consider, ye brutish among the people, And ye foolish, when do ye act wisely?
Proverbs 12:11
Whoso is tilling the ground is satisfied with bread, And whoso is pursuing vanities is lacking heart,
Jeremiah 2:5
Thus said Jehovah: What -- have your fathers found in Me perversity, That they have gone far off from Me, And go after the vanity, and become vain,
Romans 1:21
because, having known God they did not glorify Him as God, nor gave thanks, but were made vain in their reasonings, and their unintelligent heart was darkened,
1 Corinthians 15:35
But some one will say, 'How do the dead rise?
Galatians 6:3
for if any one doth think himself to be something -- being nothing -- himself he doth deceive;
Colossians 2:8
See that no one shall be carrying you away as spoil through the philosophy and vain deceit, according to the deliverance of men, according to the rudiments of the world, and not according to Christ,
1 Timothy 1:6
from which certain, having swerved, did turn aside to vain discourse,
Titus 1:10
for there are many both insubordinate, vain-talkers, and mind-deceivers -- especially they of the circumcision --

That

James 2:14
What is the profit, my brethren, if faith, any one may speak of having, and works he may not have? is that faith able to save him?

General references

1 Corinthians 15:14
and if Christ hath not risen, then void is our preaching, and void also your faith,