Numbers 35:16 defines murder with a weapon—together with verse 30, it provides both the definition and the witness requirement for capital punishment.

Deuteronomy 17:6 repeats the same law: a death sentence requires two or three witnesses, not just one.

Deuteronomy 17:7 adds that the witnesses throw the first stones, showing their role in carrying out the judgment.

Deuteronomy 19:15 generalizes the two-witness rule to all legal disputes, not just capital cases.

Matthew 18:16 applies the same OT witness principle to church discipline and conflict resolution.

John 8:17 directly cites this law to affirm that testimony of two men is true, as Jesus argues for His own witness.

John 8:18 applies the two-witness rule to Jesus and the Father, fulfilling the legal requirement for valid testimony.

2 Corinthians 13:1 quotes the principle to justify Paul's repeated visits and confirm his testimony.

1 Timothy 5:19 applies the two-or-three witness rule specifically to accusations against church elders.

Hebrews 10:28 references the OT law of two witnesses as the basis for capital punishment under Moses, setting up a contrast with Christ.

Exodus 21:12 establishes the death penalty for murder—Numbers 35:30 here adds the procedural requirement of multiple witnesses.

In Matthew 5:21, Jesus references the OT murder law—Numbers 35:30 supplies the specific witness requirement for that judgment.