James 2:20

But will you know, 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

because, when they knew God, they did not glorify him as God, nor were they thankful; but they became perverse in their reasonings, and their wicked heart was darkened;

1 Corinthians 15:35-36

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

Galatians 5:6

For, in Christ Jesus, neither circumcision avails any thing, nor uncircumcision, but faith that works by love.

Galatians 6:3

For if any one think himself to be something when he is nothing, he deceives himself:

Colossians 2:8

See that no one make you the victims of imposture by means of philosophy and vain deceit, according to the tradition of men, according to the rudiments of the world, and not ac cording to Christ:

1 Timothy 1:6

which things some not having aimed at, have turned aside to idle disputation,

Titus 1:10

For there are many unruly and vain talkers and deceivers, especially those of the circumcision,

James 1:26

If any one among you seems to be religious, and bridles not his tongue, but deceives his own heart, this man's religion is vain.

James 2:17

So, also, faith, if it has not works, is dead, being 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 among you seems to be religious, and bridles not his tongue, but deceives his own heart, this man's religion is vain.
Romans 1:21
because, when they knew God, they did not glorify him as God, nor were they thankful; but they became perverse in their reasonings, and their wicked heart was darkened;
1 Corinthians 15:35
But some one will say: How are the dead raised up? and with what body do they come?
Galatians 6:3
For if any one think himself to be something when he is nothing, he deceives himself:
Colossians 2:8
See that no one make you the victims of imposture by means of philosophy and vain deceit, according to the tradition of men, according to the rudiments of the world, and not ac cording to Christ:
1 Timothy 1:6
which things some not having aimed at, have turned aside to idle disputation,
Titus 1:10
For there are many unruly and vain talkers and deceivers, especially those of the circumcision,

That

James 2:14
What profit is there, my brethren, if any one say he has faith, and have not works? Can faith save him?

General references

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