Hebrews 10:28

Any man who treated the law of Moses with neglect, was put to death, without mercy, on the deposition of two or three witnesses:

Hebrews 2:2

For if the discourse spoken by angels was confirmed, and every transgression and disobedience received a just punishment as its due,

Matthew 18:16

But if he will not hear thee, take with thee one or two more, that by the mouth of two or three witnesses every word may be confirmed.

John 8:17

Now even in your law it is written, that the testimony of two men is true.

Romans 9:15

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

2 Corinthians 13:1

THIS third time I am coming to you: by the mouth of two or three witnesses shall every charge be established.

James 2:13

For judgment without mercy shall be on him who shewed no mercy, and 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 discourse spoken by angels was confirmed, and every transgression and disobedience received a just punishment as its due,

Without

Romans 9:15
For he saith to Moses, "I will have mercy on whom I will have mercy, and I will have compassion on whom I will have compassion."
James 2:13
For judgment without mercy shall be on him who shewed no mercy, and mercy glorieth against judgment.

Under

Matthew 18:16
But if he will not hear thee, take with thee one or two more, that by the mouth of two or three witnesses every word may be confirmed.
John 8:17
Now even in your law it is written, that the testimony of two men is true.
2 Corinthians 13:1
THIS third time I am coming to you: by the mouth of two or three witnesses shall every charge be established.

General references

Matthew 7:27
and the rain descended, and the rivers rushed, and the winds blew, and set against that house, and it fell; and the fall of it was great.
Matthew 24:21
For then the tribulation will be great, such as never was from the beginning of the world, and never more shall be.
Mark 3:28
Verily I say unto you, That all sins shall be forgiven to the sons of men, and the blasphemies, whatsoever they may blaspheme:
Luke 3:9
But now is the ax laid even to the root of the trees; every tree therefore that produceth not good fruit, is cut down and cast into the fire.
Luke 12:10
And every one who shall utter a word against the Son of man, it shall be forgiven him; but for him who hath blasphemed against the Holy Ghost, there shall be no forgiveness.
John 16:9
of sin first, because they believe not in me;