Matthew 15:9

But in vain do they worship Me, teaching as doctrines the commandments of men.'"

Titus 1:14

not giving heed to Jewish fables, and commandments of men who turn away from the truth.

Mark 7:7

But in vain do they worship Me, teaching as their doctrines the precepts of men.

1 Corinthians 15:2

through which also ye are saved, if ye hold fast the word which I proclaimed to you, unless ye believed in vain.

Colossians 2:18-22

Let no one rob you of your prize, wishing to do it in humility and in a worshipping of angels, speculating about the things which he has seen, being vainly puffed up by the mind of his flesh,

1 Timothy 1:4

nor to give heed to fables and endless genealogies; which, indeed, occasion disputes rather than God's dispensation, which is in faith, so do I now.

1 Timothy 4:1-3

But the Spirit expressly saith, that in later times, some will fall away from the faith, giving heed to seducing spirits, and to teachings of demons,

1 Timothy 4:6-7

Suggesting these things to the brethren, you will be a good minister of Christ Jesus, nourished in the words of the faith and of the good teaching which you have strictly followed;

Hebrews 13:9

Be not carried away by manifold and strange teachings; for it is good that the heart be established with grace, not with foods, in which those who occupied themselves were not profited.

James 2:20

But are you willing to know, O vain man, that faith apart from works is worthless?

Revelation 22:18

"I testify to every one who hears the words of the prophecy of this book, if anyone shall add to them, God will add to him the plagues that are written 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
But in vain do they worship Me, teaching as their doctrines the precepts of men.
1 Corinthians 15:2
through which also ye are saved, if ye hold fast the word which I proclaimed to you, unless ye believed in vain.
James 2:20
But are you willing to know, O vain man, that faith apart from works is worthless?

Teaching

Colossians 2:18
Let no one rob you of your prize, wishing to do it in humility and in a worshipping of angels, speculating about the things which he has seen, being vainly puffed up by the mind of his flesh,
1 Timothy 1:4
nor to give heed to fables and endless genealogies; which, indeed, occasion disputes rather than God's dispensation, which is in faith, so do I now.
1 Timothy 4:1
But the Spirit expressly saith, that in later times, some will fall away from the faith, giving heed to seducing spirits, and to teachings of demons,
Titus 1:14
not giving heed to Jewish fables, and commandments of men who turn away from the truth.
Hebrews 13:9
Be not carried away by manifold and strange teachings; for it is good that the heart be established with grace, not with foods, in which those who occupied themselves were not profited.
Revelation 22:18
"I testify to every one who hears the words of the prophecy of this book, if anyone shall add to them, God will add to him the plagues that are written in this book;

General references

1 Corinthians 15:14
and, if Christ hath not been raised, then is our preaching vain, and vain is your faith;