in.

Exodus 20:7
You shall not take the name of the LORD your God in vain, for the LORD will not leave anyone unpunished who takes His name in vain.

Leviticus 26:16, 20
then this is what I will do to you: I will bring upon you sudden terror, wasting disease, and fever that will destroy your sight and drain your life. You will sow your seed in vain, because your enemies will eat it. . . .

1 Samuel 25:21
Now David had just finished saying, "In vain I have protected all that belonged to this man in the wilderness so that nothing was missed of all that belongs to him, yet he has paid me back evil for good.

Psalm 39:6
Surely every man goes about like a phantom; surely he bustles in vain; he heaps up riches not knowing who will haul them away.

Psalm 73:13
Surely in vain I have kept my heart pure; in innocence I have washed my hands.

Ecclesiastes 5:2-7
Do not be hasty to speak, and do not let your heart be hasty to utter a word before God. After all, God is in heaven and you are on earth. So let your words be few. . . .

Isaiah 1:13-15
Bring your worthless offerings no more; your incense is detestable to Me--your New Moons, Sabbaths, and convocations--I cannot endure iniquity in a solemn assembly. . . .

Isaiah 58:1-3
"Cry aloud, do not hold back! Raise your voice like a trumpet. Declare to My people their transgression and to the house of Jacob their sins. . . .

Malachi 3:14
You have said, 'It is futile to serve God. What have we gained by keeping His requirements and walking mournfully before the LORD of Hosts?

Mark 7:7
They worship Me in vain; they teach as doctrine the precepts of men.'

1 Corinthians 15:2
By this gospel you are saved, if you hold firmly to the word I preached to you. Otherwise, you have believed in vain.

James 2:20
O foolish man, do you want evidence that faith without deeds is worthless?

teaching.

Deuteronomy 12:32
See that you do everything I command you; do not add to it or subtract from it.

Proverbs 30:5, 6
Every word of God is pure; He is a shield to those who take refuge in Him. . . .

Isaiah 29:13
Therefore the Lord said: "These people draw near to Me with their mouths and honor Me with their lips, but their hearts are far from Me. Their worship of Me is but rules taught by men.

Colossians 2:18-22
Do not let anyone who delights in false humility and the worship of angels disqualify you with speculation about what he has seen. Such a man is puffed up without basis by his unspiritual mind, . . .

1 Timothy 1:4
or devote themselves to myths and endless genealogies, which promote speculation rather than the stewardship of God's work, which is by faith.

1 Timothy 4:1-3, 6, 7
Now the Spirit expressly states that in later times some will abandon the faith to follow deceitful spirits and the teachings of demons, . . .

Titus 1:14
and will pay no attention to Jewish myths or to the commands of men who have rejected the truth.

Hebrews 13:9
Do not be carried away by all kinds of strange teachings, for it is good for the heart to be strengthened by grace and not by ceremonial foods, which are of no value to those devoted to them.

Revelation 22:18
I testify to everyone who hears the words of prophecy in this book: If anyone adds to them, God will add to him the plagues described in this book.