Berean Study Bible
Anyone who rejected the law of Moses died without mercy on the testimony of two or three witnesses.

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

American Standard Version
A man that hath set at nought Moses law dieth without compassion on the word of two or three witnesses:

Darby Bible Translation
Any one that has disregarded Moses' law dies without mercy on [the testimony of] two or three witnesses:

Douay-Rheims Bible
A man making void the law of Moses, dieth without any mercy under two or three witnesses:

English Revised Version
A man that hath set at nought Moses' law dieth without compassion on the word of two or three witnesses:

Young's Literal Translation
any one who did set at nought a law of Moses, apart from mercies, by two or three witnesses, doth die,

Hebrews 10:28 Bible Hub
Hebrews 10:28 Bible Apps
Hebrews 10:28 Open Bible