James 2:20

But are you willing to know, O foolish man, that faith without works is useless?

James 2:26

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

Romans 1:21

for although they knew God they did not honor him as God or give thanks to him, but they became futile in their thinking, and their foolish hearts were darkened.

1 Corinthians 15:35-36

But someone will ask, "How are the dead raised? With what kind of body do they come?"

Galatians 5:6

For in Christ Jesus neither circumcision nor uncircumcision is of any avail, but faith working through love.

Galatians 6:3

For if anyone thinks he is something when he is nothing, he deceives himself.

Colossians 2:8

See to it that no one takes you captive through philosophy and empty deception, according to human tradition, according to the elementary principles of the world, rather than according to Christ.

1 Timothy 1:6

For some men have wandered away from these things and turned aside to fruitless discussion,

Titus 1:10

For there are many rebellious men, empty talkers and deceivers, especially those of the circumcision.

James 1:26

If anyone thinks himself to be religious, and yet does not bridle his tongue but deceives his own heart, this man's religion is worthless.

James 2:17

So faith by itself, if it has no works, 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 anyone thinks himself to be religious, and yet does not bridle his tongue but deceives his own heart, this man's religion is worthless.
Romans 1:21
for although they knew God they did not honor him as God or give thanks to him, but they became futile in their thinking, and their foolish hearts were darkened.
1 Corinthians 15:35
But someone will ask, "How are the dead raised? With what kind of body do they come?"
Galatians 6:3
For if anyone thinks he is something when he is nothing, he deceives himself.
Colossians 2:8
See to it that no one takes you captive through philosophy and empty deception, according to human tradition, according to the elementary principles of the world, rather than according to Christ.
1 Timothy 1:6
For some men have wandered away from these things and turned aside to fruitless discussion,
Titus 1:10
For there are many rebellious men, empty talkers and deceivers, especially those of the circumcision.

That

James 2:14
What good is it, my brethren, if a man says he has faith but has no works? Can such faith save him?

General references

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