New Revised Standard Version
Do not let your mouth lead you into sin, and do not say before the messenger that it was a mistake; why should God be angry at your words, and destroy the work of your hands?

Contemporary English Version
Don't let your mouth get you in trouble! And don't say to the worship leader, "I didn't mean what I said." God can destroy everything you have worked for, so don't say something that makes God angry.

New American Bible
Let not your utterances make you guilty, and say not before his representative, “It was a mistake.” Why should God be angered by your words and destroy the works of your hands?

Douay-Rheims Bible
Give not thy mouth to cause thy flesh to sin: and say not before the angel: There is no providence: lest God be angry at thy words, and destroy all the works of thy hands.

Give not thy mouth to cause thy flesh to sin: and say not before the angel: There is no providence: lest God be angry at thy words, and destroy all the works of thy hands.

thy mouth

Ecclesiastes 5:1,2 Keep thy foot, when thou goest into the house of God, and draw nigh to hear. For much better is obedience, than the victims of fools, who know not what evil they do. . . .

James 1:26 And if any man think himself to be religious, not bridling his tongue but deceiving his own heart, this man's religion is vain.

James 3:2 For in many things we all offend. If any man offend not in word, the same is a perfect man. He is able also with a bridle to lead about the whole body.

before

Leviticus 5:4,5 The person that sweareth, and uttereth with his lips, that he would do either evil or good, and bindeth the same with an oath, and his word: and having forgotten it afterwards understandeth his offence, . . .

Genesis 48:16 The angel that delivereth me from all evils, bless these boys: and let my name be called upon them, and the names of my fathers Abraham and Isaac; and may they grow into a multitude upon the earth.

Hosea 12:4,5 And he prevailed over the angel, and was strengthened: he wept, and made supplication to him: he found him in Bethel, and there he spoke with us. . . .

Malachi 2:7 For the lips of the priests shall keep knowledge, and they shall seek the law at his mouth: because he is the angel of the Lord of hosts.

Malachi 3:1 Behold I send my angel, and he shall prepare the way before my face. And presently the Lord, whom you seek, and the angel of the testament, whom you desire, shall come to his temple. Behold, he cometh, saith the Lord of hosts.

Acts 7:30-35 And when forty years were expired, there appeared to him, in the desert of mount Sina, an angel in a flame of fire in a bush. . . .

1 Corinthians 11:10 Therefore ought the woman to have a power over her head, because of the angels.

1 Timothy 5:21 I charge thee, before God and Christ Jesus and the elect angels, that thou observe these things without prejudice, doing nothing by declining to either side.

Hebrews 1:14 Are they not all ministering spirits, sent to minister for them who shall receive the inheritance of salvation?

it was

Leviticus 4:5-6 He shall take also of the blood of the calf: and carry it into the tabernacle of the testimony. . . .

Leviticus 27:9,10 But a beast that may be sacrificed to the Lord, if any one shall vow, shall be holy, . . .

destroy

Haggai 1:9-11 You have looked for more, and behold it became less, and you brought it home, and I blowed it away: why, saith the Lord of hosts? because my house is desolate, and you make haste every man to his own house. . . .

Haggai 2:14-17 And Haggai answered, and said: So is this people, and so is this nation before my face, saith the Lord, and so is all the work of their hands: and all that they have offered there, shall be defiled. . . .

1 Corinthians 3:13-15 Every man's work shall be manifest. For the day of the Lord shall declare it, because it shall be revealed in fire. And the fire shall try every man's work, of what sort it is. . . .

Isaiah 50:10,11 Who is there among you that feareth the Lord, that heareth the voice of his servant, that hath walked in darkness, and hath no light? let him hope in the name of the Lord, and lean upon his God. . . .