Hebrews 10:28

The one having rejected the law of Moses dies without mercy before two or three witnesses:

Hebrews 2:2

For if the word having been spoken by angels was stedfast, and every disobedience and transgression received a just recompense of reward;

Matthew 18:16

if he may not hear thee, take with thyself one or two, in order that in the mouth of two or three witnesses the word may stand.

John 8:17

And it has been written in our law, that the testimony of two men is true.

Romans 9:15

For he says to Moses, I will have mercy on whom I do have mercy, and I will commiserate whom I do commiserate.

2 Corinthians 13:1

This the third time I am coming to you: in the mouth of two or three witnesses every word shall be established.

James 2:13

For judgment is without mercy to him that shows no mercy; but mercy glorieth against judgment.

Treasury of Scripture Knowledge

Summary

He that despised Moses' law died without mercy under two or three witnesses:

Despised

Bible References

Despised

Hebrews 2:2
For if the word having been spoken by angels was stedfast, and every disobedience and transgression received a just recompense of reward;

Without

Romans 9:15
For he says to Moses, I will have mercy on whom I do have mercy, and I will commiserate whom I do commiserate.
James 2:13
For judgment is without mercy to him that shows no mercy; but mercy glorieth against judgment.

Under

Matthew 18:16
if he may not hear thee, take with thyself one or two, in order that in the mouth of two or three witnesses the word may stand.
John 8:17
And it has been written in our law, that the testimony of two men is true.
2 Corinthians 13:1
This the third time I am coming to you: in the mouth of two or three witnesses every word shall be established.

General references

Matthew 7:27
And the rain came down, and the rivers came, and the winds blew, and beat against that house; and it fell: and great was the fall of it.
Matthew 24:21
For then there will be great tribulation, such as has not been from the beginning of the world even until now nor ever may be.
Mark 3:28
Truly I say unto you, that all sins shall be forgiven unto the sons of men, and blasphemies whatsoever they may blaspheme:
Luke 3:9
But truly the ax is laid to the root of the trees; Therefore every tree not producing good fruit is hewn down, and cast into the fire.
Luke 12:10
And every one who shall speak a word against the Son of man, it shall be forgiven him: but to him having blasphemed against the Holy Ghost, it shall not be forgiven.
John 16:9
Concerning sin indeed, because they do not believe on me; and concerning righteousness;