New Living Translation
But never put a person to death on the testimony of only one witness. There must always be two or three witnesses.

American Standard Version
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.

Berean Study Bible
On the testimony of two or three witnesses a man shall be put to death, but he shall not be executed on the testimony of a lone witness.

Douay-Rheims Bible
By the mouth of two or three witnesses shall he die that is to be slain. Let no man be put to death, when only one beareth witness against him.

English Revised Version
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.

King James Bible
At the mouth of two witnesses, or three witnesses, shall he that is worthy of death be put to death; but at the mouth of one witness he shall not be put to death.

World English Bible
At the mouth of two witnesses, or three witnesses, shall he who is to die be put to death; at the mouth of one witness he shall not be put to death.

Young's Literal Translation
By the mouth of two witnesses or of three witnesses is he who is dead put to death; he is not put to death by the mouth of one witness;

Deuteronomy 17:6 Additional Translations ...