Matthew 12:36

But I tell you that every worthless word that they speak, people will give an account for it on the day of judgment!

Ecclesiastes 12:14

For God will bring every deed into judgment, including every secret thing, whether good or evil.

Romans 2:16

on the day when God judges the secret things of people, according to my gospel, through Christ Jesus.

Ephesians 6:4-6

And fathers, do not make your children angry, but bring them up in the discipline and instruction of the Lord.

Jude 1:14-15

And Enoch, the seventh from Adam, also prophesied about these [people], saying, "Behold, the Lord came with tens of thousands of his holy ones

Revelation 20:12

And I saw the dead--the great and the small--standing before the throne, and books were opened. And another book was opened, which is the [book] of life, and the dead were judged by what was written in the books, according to their deeds.

Treasury of Scripture Knowledge

Summary

But I say unto you, That every idle word that men shall speak, they shall give account thereof in the day of judgment.

Bible References

Every

Ecclesiastes 12:14
For God will bring every deed into judgment, including every secret thing, whether good or evil.
Romans 2:16
on the day when God judges the secret things of people, according to my gospel, through Christ Jesus.
Ephesians 6:4
And fathers, do not make your children angry, but bring them up in the discipline and instruction of the Lord.
Jude 1:14
And Enoch, the seventh from Adam, also prophesied about these [people], saying, "Behold, the Lord came with tens of thousands of his holy ones
Revelation 20:12
And I saw the dead--the great and the small--standing before the throne, and books were opened. And another book was opened, which is the [book] of life, and the dead were judged by what was written in the books, according to their deeds.

General references

Proverbs 13:3
He who keeps his mouth guards his life; he who opens his lips, ruin [belongs] to him.
Ecclesiastes 12:14
For God will bring every deed into judgment, including every secret thing, whether good or evil.
Mark 7:20
And he said, "What comes out of a person, that defiles a person.
Romans 14:12
So each one of us will give an account concerning himself.