Matthew 12:36

But I tell you, on the day of judgment people will have to give an accounting for every careless or useless word they speak.

Ecclesiastes 12:14

For God will bring every act to judgment, every hidden and secret thing, whether it is good or evil.

Romans 2:16

on that day when, as my gospel proclaims, God will judge the secrets [all the hidden thoughts and concealed sins] of men through Christ Jesus.

Ephesians 6:4-6

Fathers, do not provoke your children to anger [do not exasperate them to the point of resentment with demands that are trivial or unreasonable or humiliating or abusive; nor by showing favoritism or indifference to any of them], but bring them up [tenderly, with lovingkindness] in the discipline and instruction of the Lord.

Jude 1:14-15

It was about these people that Enoch, in the seventh generation from Adam, prophesied, when he said, “Look, the Lord came with myriads 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. Then another book was opened, which is the Book of Life; and the dead were judged according to what they had done as written in the books [that is, everything done while on earth].

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 act to judgment, every hidden and secret thing, whether it is good or evil.
Romans 2:16
on that day when, as my gospel proclaims, God will judge the secrets [all the hidden thoughts and concealed sins] of men through Christ Jesus.
Ephesians 6:4
Fathers, do not provoke your children to anger [do not exasperate them to the point of resentment with demands that are trivial or unreasonable or humiliating or abusive; nor by showing favoritism or indifference to any of them], but bring them up [tenderly, with lovingkindness] in the discipline and instruction of the Lord.
Jude 1:14
It was about these people that Enoch, in the seventh generation from Adam, prophesied, when he said, “Look, the Lord came with myriads 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. Then another book was opened, which is the Book of Life; and the dead were judged according to what they had done as written in the books [that is, everything done while on earth].

General references

Proverbs 13:3

The one who guards his mouth [thinking before he speaks] protects his life;
The one who opens his lips wide [and chatters without thinking] comes to ruin.
Ecclesiastes 12:14
For God will bring every act to judgment, every hidden and secret thing, whether it is good or evil.
Mark 7:20
And He said, “Whatever comes from [the heart of] a man, that is what defiles and dishonors him.
Romans 14:12
So then, each of us will give an account of himself to God.