30 Whoso killeth any person, the murderer shall be slain at the mouth of witnesses; but one witness shall not testify against any person that he die.
Numbers 35:30 Cross References - JPS_ASV_Byz
Numbers 35:16
16 But if he smote him with an instrument of iron, so that he died, he is a murderer; the murderer shall surely be put to death.
Deuteronomy 17:6-7
6 At the mouth of two witnesses, or three witnesses, shall he that is to die be put to death; at the mouth of one witness he shall not be put to death.
7 The hand of the witnesses shall be first upon him to put him to death, and afterward the hand of all the people. So thou shalt put away the evil from the midst of thee.
Deuteronomy 19:15
15 One witness shall not rise up against a man for any iniquity, or for any sin, in any sin that he sinneth; at the mouth of two witnesses, or at the mouth of three witnesses, shall a matter be establishment
Matthew 18:16
16 But if he hear thee not, take with thee one or two more, that at the mouth of two witnesses or three every word may be established.
John 7:51
51 Doth our law judge a man, except it first hear from himself and know what he doeth?
John 8:17-18
2 Corinthians 13:1
1 This is the third time I am coming to you. At the mouth of two witnesses or three shall every word be established.
1 Timothy 5:19
19 Against an elder receive not an accusation, except at the mouth of two or three witnesses.
Hebrews 10:28
28 A man that hath set at nought Moses law dieth without compassion on the word of two or three witnesses:
Revelation 11:3
3 And I will give unto my two witnesses, and they shall prophesy a thousand two hundred and threescore days, clothed in sackcloth.