Matthew 15:9

In vain do they worship me, teaching as doctrines the precepts of men.'"

Titus 1:14

and will pay no attention to Jewish myths or to the commands of men who reject the truth.

Mark 7:7

In vain they worship me, teaching as doctrines the precepts of men.'

1 Corinthians 15:2

by which also you are saved, if you hold fast the word which I preached to you, unless you believed in vain.

Colossians 2:18-22

Let no one disqualify you for the prize by delighting in self-abasement and the worship of the angels, taking his stand on visions he has seen, puffed up without cause by his fleshly mind,

1 Timothy 1:4

nor to devote themselves to myths and endless genealogies. These promote controversies rather than the divine trainingwhich is by faith.

1 Timothy 4:1-3

Now the Spirit expressly says that in later times some will fall away from the faith by giving heed to deceitful spirits and doctrines of demons,

1 Timothy 4:6-7

If you point out these things to the brethren, you will be a good minister of Christ Jesus, constantly nourished on the words of the faith and of the good doctrine which you have followed.

Hebrews 13:9

Do not be carried away by varied and strange teachings; for it is good for the heart to be strengthened by grace, not by foods, through which those who were so occupied were not benefited.

James 2:20

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

Revelation 22:18

I warn everyone who hears the words of the prophecy of this book: if anyone adds to them, God will add to him the plagues described in this book,

Treasury of Scripture Knowledge

Summary

But in vain they do worship me, teaching for doctrines the commandments of men.

General references

Bible References

In

Mark 7:7
In vain they worship me, teaching as doctrines the precepts of men.'
1 Corinthians 15:2
by which also you are saved, if you hold fast the word which I preached to you, unless you believed in vain.
James 2:20
But are you willing to know, O foolish man, that faith without works is useless?

Teaching

Colossians 2:18
Let no one disqualify you for the prize by delighting in self-abasement and the worship of the angels, taking his stand on visions he has seen, puffed up without cause by his fleshly mind,
1 Timothy 1:4
nor to devote themselves to myths and endless genealogies. These promote controversies rather than the divine trainingwhich is by faith.
1 Timothy 4:1
Now the Spirit expressly says that in later times some will fall away from the faith by giving heed to deceitful spirits and doctrines of demons,
Titus 1:14
and will pay no attention to Jewish myths or to the commands of men who reject the truth.
Hebrews 13:9
Do not be carried away by varied and strange teachings; for it is good for the heart to be strengthened by grace, not by foods, through which those who were so occupied were not benefited.
Revelation 22:18
I warn everyone who hears the words of the prophecy of this book: if anyone adds to them, God will add to him the plagues described in this book,

General references

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