30 whoso smiteth a person, by the mouth of witnesses doth one slay the murderer; and one witness doth not testify against a person—to die.
Numbers 35:30 Cross References - YLT
Numbers 35:16
16 `And if with an instrument of iron he hath smitten him, and he dieth, he is a murderer: the murderer is certainly put to death.
Deuteronomy 17:6-7
6 By the mouth of two witnesses or of three witnesses is he who is dead put to death; he is not put to death by the mouth of one witness;
7 the hand of the witnesses is on him, in the first place, to put him to death, and the hand of all the people last; and thou hast put away the evil thing out of thy midst.
Deuteronomy 19:15
15 `One witness doth not rise against a man for any iniquity, and for any sin, in any sin which he sinneth; by the mouth of two witnesses, or by the mouth of three witnesses, is a thing established.
Matthew 18:16
16 and if he may not hear, take with thee yet one or two, that by the mouth of two witnesses or three every word may stand.
John 7:51
51 `Doth our law judge the man, if it may not hear from him first, and know what he doth?'
John 8:17-18
2 Corinthians 13:1
1 This third time do I come unto you; on the mouth of two witnesses or three shall every saying be established;
1 Timothy 5:19
19 Against an elder an accusation receive not, except upon two or three witnesses.
Hebrews 10:28
28 any one who did set at nought a law of Moses, apart from mercies, by two or three witnesses, doth die,
Revelation 11:3
3 and I will give to My two witnesses, and they shall prophesy days, a thousand, two hundred, sixty, arrayed with sackcloth;