“Two or three witnesses”
A lone witness is not sufficient to establish any wrongdoing or sin against a man… A matter must be established by the testimony of two or three witnesses. (Deuteronomy 19:15 BSB)
What it sounds like today
A minor procedural rule about courtroom evidence.
The cultural key
This is a cornerstone of the Bible's justice system, and it protected the accused in a world with no forensic evidence. A single accuser was never enough to convict, no matter the charge; guilt had to be corroborated by at least two, preferably three, independent witnesses. The rule guards against the obvious dangers of a lone testimony: a personal grudge, a lie, or a mistaken identification could otherwise destroy a person. The Law even prescribes severe punishment for a witness proven false, giving the perjurer the penalty the accused would have suffered (19:16-19). This principle echoes throughout Scripture: Jesus applies it to confronting a sinning brother ('take one or two others, so that every matter may be established by two or three witnesses,' Matthew 18:16), Paul invokes it for accusations against elders, and the demand for multiple witnesses is central even at Jesus's own trial, where the false witnesses fail to agree. A modern reader sees dry procedure; the first hearers heard a fundamental safeguard against the false accuser.
Recovered meaning
No one could be convicted on a single testimony; guilt required at least two independent witnesses, a bedrock protection against false accusation and vendetta. The New Testament reuses the rule for church discipline and for weighing charges.