Parallel
Numbers 35:30
Brenton's English Septuagint · Berean Standard Bible
Whoever kills a man, thou shalt slay the murderer on the testimony of witnesses; and one witness shall not testify against a soul that he should die.
If anyone kills a person, the murderer is to be put to death on the testimony of the witnesses. But no one is to be put to death based on the testimony of a lone witness.