Berean Study Bible
You may ask in your heart, “How can we recognize a message that the LORD has not spoken?”

King James Bible
And if thou say in thine heart, How shall we know the word which the LORD hath not spoken?

American Standard Version
And if thou say in thy heart, How shall we know the word which Jehovah hath not spoken?

Darby Bible Translation
And if thou say in thy heart, How shall we know the word that Jehovah hath not spoken?

Douay-Rheims Bible
And if in silent thought thou answer: How shall I know the word that the Lord hath not spoken?

English Revised Version
And if thou say in thine heart, How shall we know the word which the LORD hath not spoken?

Young's Literal Translation
'And when thou sayest in thy heart, How do we know the word which Jehovah hath not spoken? --