Parallel
Numbers 35:30
Swete's Septuagint · Berean Standard Bible
πᾶς πατάξας ψυχήν, διὰ μαρτύρων φονεύσεις τὸν φονεύσαντα, καὶ μάρτυς εἷς οὐ μαρτυρήσει ἐπὶ ψυχῆς ἀποθανεῖν·
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.