James 2:20

But do you want to be convinced, O foolish man, that faith apart from deeds is barren?

James 2:26

So just as the body without a spirit is dead, so faith is dead without deeds.

Romans 1:21

For although they knew God, yet they did not glorify him as God, nor give him thanks; but became vain in their reasoning, and their senseless minds were darkened.

1 Corinthians 15:35-36

But some one will ask. "How are the dead raised? and with what body are they coming?"

Galatians 5:6

because in Christ neither circumcision has any value, nor uncircumcision, but faith which works through love.

Galatians 6:3

If a man fancies himself to be somebody when he is really nobody he is deceiving himself.

Colossians 2:8

Take care lest any man drag you away captive by his philosophy which is a vain deceit, following the traditions of men and the world's crude notions, and not Christ.

1 Timothy 1:6

Some have failed here, and have turned aside to empty argument.

Titus 1:10

For there are many individuals who are unruly, empty talkers and deceivers, particularly those of the circumcision, whose mouths must be stopped;

James 1:26

If a man thinks himself to be religious, and yet does not bridle his tongue, but deceives his own religion,

James 2:17

In just the same way faith, if it have not deeds, is by itself a lifeless thing.

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 a man thinks himself to be religious, and yet does not bridle his tongue, but deceives his own religion,
Romans 1:21
For although they knew God, yet they did not glorify him as God, nor give him thanks; but became vain in their reasoning, and their senseless minds were darkened.
1 Corinthians 15:35
But some one will ask. "How are the dead raised? and with what body are they coming?"
Galatians 6:3
If a man fancies himself to be somebody when he is really nobody he is deceiving himself.
Colossians 2:8
Take care lest any man drag you away captive by his philosophy which is a vain deceit, following the traditions of men and the world's crude notions, and not Christ.
1 Timothy 1:6
Some have failed here, and have turned aside to empty argument.
Titus 1:10
For there are many individuals who are unruly, empty talkers and deceivers, particularly those of the circumcision, whose mouths must be stopped;

That

James 2:14
My brothers, what good is it if any one says that he has faith, if he has no deeds? Can such faith save him?

General references

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