Hebrews 10:28

He that hath set at nought the law of Moses dieth without mercy under two or three witnesses;

Hebrews 2:2

For if the word spoken through angels proved steadfast, and every transgression and disobedience received a just retribution,

Matthew 18:16

but if he do not listen, take with thee one or two more; that by the mouth of two or three witnesses every word may be established.

John 8:17

Moreover, it is written in your law, that the witness of two men is true.

Romans 9:15

For he saith to Moses, "On whom I have mercy, on him will I have mercy; and on whom I have compassion, on him will I have compassion."

2 Corinthians 13:1

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

James 2:13

For the judgment shall be without mercy to him that showed no mercy. 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 spoken through angels proved steadfast, and every transgression and disobedience received a just retribution,

Without

Romans 9:15
For he saith to Moses, "On whom I have mercy, on him will I have mercy; and on whom I have compassion, on him will I have compassion."
James 2:13
For the judgment shall be without mercy to him that showed no mercy. Mercy glorieth against judgment.

Under

Matthew 18:16
but if he do not listen, take with thee one or two more; that by the mouth of two or three witnesses every word may be established.
John 8:17
Moreover, it is written in your law, that the witness of two men is true.
2 Corinthians 13:1
This is the third time I am coming to you. In the mouth of two or three witnesses shall every word be established.

General references

Matthew 7:27
and the rain descended, and the streams came, and the winds blew, and beat upon that house; and it fell; and great was its fall.
Matthew 24:21
For there will then be great distress, such as hath not been from the beginning of the world to this time; no, nor shall ever be.
Mark 3:28
Truly do I say to you, All sins will be forgiven the sons of men, and the blasphemies wherewith they shall blaspheme;
Luke 3:9
And already also is the axe lying at the root of the trees; every tree therefore that beareth not good fruit is to be cut down, and cast into the fire.
Luke 12:10
And every one that shall speak a word against the Son of man, it will be forgiven him; but to him that hath blasphemed against the Holy Spirit, it will not be forgiven.
John 16:9
Of sin, because they believe not in me;