Ecclesiastes 5:6

Suffer not thy mouth to cause thy flesh to sin; neither say thou before the angel, that it was an error: why should God be angry at thy voice, and destroy the work of thy hands?

1 Corinthians 11:10

For this cause ought the woman to have power on her head, because of the angels.

Genesis 48:16

The angel who hath redeemed me from all evil, bless the lads; and let my name be named on them, and the name of my fathers Abraham and Isaac: and let them grow into a multitude in the midst of the earth.

Leviticus 5:4-6

Or if a soul shall swear, pronouncing with his lips to do evil, or to do good, whatever it may be, that a man shall pronounce with an oath, and it be hid from him; when he knoweth of it, then he shall be guilty in one of these.

Leviticus 27:9-10

And if it shall be a beast of which men bring an offering to the LORD, all that any man giveth of such to the LORD shall be holy.

Numbers 15:25

And the priest shall make an atonement for all the congregation of the children of Israel, and it shall be forgiven them; for it is ignorance: and they shall bring their offering, a sacrifice made by fire to the LORD, and their sin-offering before the LORD, for their ignorance:

Ecclesiastes 5:1-2

Keep thy foot when thou goest to the house of God, and be more ready to hear, than to give the sacrifice of fools: for they consider not that they do evil.

Hosea 12:4-5

Yes, he had power over the angel, and prevailed: he wept, and made supplication to him: he found him in Beth-el, and there he spoke with us;

Haggai 1:9-11

Ye looked for much, and lo, it came to little; and when ye brought it home, I did blow upon it. Why? saith the LORD of hosts. Because of my house that is waste, and ye run every man to his own house.

Haggai 2:14-17

Then answered Haggai, and said, So is this people, and so is this nation before me, saith the LORD; and so is every work of their hands; and that which they offer there is unclean.

Malachi 2:7

For the priest's lips should keep knowledge, and they should seek the law at his mouth: for he is the messenger of the LORD of hosts.

Malachi 3:1

Behold, I will send my messenger, and he shall prepare the way before me: and the Lord, whom ye seek, will suddenly come to his temple, even the messenger of the covenant, whom ye delight in: behold, he will come, saith the LORD of hosts.

Acts 7:30-35

And when forty years had expired, there appeared to him in the wilderness of mount Sina, an angel of the Lord in a flame of fire in a bush.

1 Corinthians 3:13-15

Every man's work will be made manifest: for the day will declare it, because it will be revealed by fire; and the fire will try every man's work, of what sort it is.

1 Timothy 5:21

I charge thee before God and the Lord Jesus Christ, and the elect angels, that thou observe these things without preferring one before another, doing nothing by partiality.

Hebrews 1:14

Are they not all ministering spirits, sent forth to minister for them who shall inherit salvation?

James 1:26

If any man among you seemeth to be religious, and bridleth not his tongue, but deceiveth his own heart, this man's religion is vain.

James 3:2

For in many things we all offend. If any man offendeth not in word, the same is a perfect man, able also to bridle the whole body.

2 John 1:8

Look to yourselves, that we lose not those things which we have wrought, but that we receive a full reward.

Treasury of Scripture Knowledge

Summary

Suffer not thy mouth to cause thy flesh to sin; neither say thou before the angel, that it was an error: wherefore should God be angry at thy voice, and destroy the work of thine hands?

Bible References

Thy mouth

Ecclesiastes 5:1
Keep thy foot when thou goest to the house of God, and be more ready to hear, than to give the sacrifice of fools: for they consider not that they do evil.
James 1:26
If any man among you seemeth to be religious, and bridleth not his tongue, but deceiveth his own heart, this man's religion is vain.
James 3:2
For in many things we all offend. If any man offendeth not in word, the same is a perfect man, able also to bridle the whole body.

Before

Leviticus 5:4
Or if a soul shall swear, pronouncing with his lips to do evil, or to do good, whatever it may be, that a man shall pronounce with an oath, and it be hid from him; when he knoweth of it, then he shall be guilty in one of these.
Genesis 48:16
The angel who hath redeemed me from all evil, bless the lads; and let my name be named on them, and the name of my fathers Abraham and Isaac: and let them grow into a multitude in the midst of the earth.
Hosea 12:4
Yes, he had power over the angel, and prevailed: he wept, and made supplication to him: he found him in Beth-el, and there he spoke with us;
Malachi 2:7
For the priest's lips should keep knowledge, and they should seek the law at his mouth: for he is the messenger of the LORD of hosts.
Malachi 3:1
Behold, I will send my messenger, and he shall prepare the way before me: and the Lord, whom ye seek, will suddenly come to his temple, even the messenger of the covenant, whom ye delight in: behold, he will come, saith the LORD of hosts.
Acts 7:30
And when forty years had expired, there appeared to him in the wilderness of mount Sina, an angel of the Lord in a flame of fire in a bush.
1 Corinthians 11:10
For this cause ought the woman to have power on her head, because of the angels.
1 Timothy 5:21
I charge thee before God and the Lord Jesus Christ, and the elect angels, that thou observe these things without preferring one before another, doing nothing by partiality.
Hebrews 1:14
Are they not all ministering spirits, sent forth to minister for them who shall inherit salvation?

It was

Leviticus 5:4
Or if a soul shall swear, pronouncing with his lips to do evil, or to do good, whatever it may be, that a man shall pronounce with an oath, and it be hid from him; when he knoweth of it, then he shall be guilty in one of these.
Leviticus 27:9
And if it shall be a beast of which men bring an offering to the LORD, all that any man giveth of such to the LORD shall be holy.

Destroy

Haggai 1:9
Ye looked for much, and lo, it came to little; and when ye brought it home, I did blow upon it. Why? saith the LORD of hosts. Because of my house that is waste, and ye run every man to his own house.
Haggai 2:14
Then answered Haggai, and said, So is this people, and so is this nation before me, saith the LORD; and so is every work of their hands; and that which they offer there is unclean.
1 Corinthians 3:13
Every man's work will be made manifest: for the day will declare it, because it will be revealed by fire; and the fire will try every man's work, of what sort it is.
2 John 1:8
Look to yourselves, that we lose not those things which we have wrought, but that we receive a full reward.