James 2:20

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

James 2:26

For as the body without the spirit is dead, so faith without works is dead also.

Romans 1:21

so that they are inexcusable; because having thus known God they glorified Him not as God, neither were they thankful; but were infatuated by their own reasonings, and their heart being void of understanding was darkened.

1 Corinthians 15:35-36

But some will say, How are the dead raised, and with what body do they come?

Galatians 5:6

For in Christ Jesus neither circumcision availeth any thing, nor uncircumcision, but faith which worketh by love.

Galatians 6:3

For if any one thinketh that he is something, when he is nothing, he deceiveth himself.

Colossians 2:8

Take heed least any one make a prey of you by philosophy and vain deceit, according to the tradition of men, after the elements of the world, and not after Christ:

1 Timothy 1:6

from which some having swerved are turned aside to vain discourses;

Titus 1:10

For there are many disorderly persons, vain-talkers and deceivers, especially those of the circumcision; whose mouths must be stopped:

James 1:26

If any among you seem to be religious, and bridleth not his tongue, but deceiveth his heart, this man's devotion is vain.

James 2:17

so faith, if it have not works, being alone, is dead.

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 among you seem to be religious, and bridleth not his tongue, but deceiveth his heart, this man's devotion is vain.
Romans 1:21
so that they are inexcusable; because having thus known God they glorified Him not as God, neither were they thankful; but were infatuated by their own reasonings, and their heart being void of understanding was darkened.
1 Corinthians 15:35
But some will say, How are the dead raised, and with what body do they come?
Galatians 6:3
For if any one thinketh that he is something, when he is nothing, he deceiveth himself.
Colossians 2:8
Take heed least any one make a prey of you by philosophy and vain deceit, according to the tradition of men, after the elements of the world, and not after Christ:
1 Timothy 1:6
from which some having swerved are turned aside to vain discourses;
Titus 1:10
For there are many disorderly persons, vain-talkers and deceivers, especially those of the circumcision; whose mouths must be stopped:

That

James 2:14
What is the advantage, my brethren, if any one say that he has faith, and he hath not works, can faith alone save him?

General references

1 Corinthians 15:14
And if Christ be not risen, then is our preaching vain, and your faith is also vain.