New International Version
Consult God's instruction and the testimony of warning. If anyone does not speak according to this word, they have no light of dawn.

English Standard Version
To the teaching and to the testimony! If they will not speak according to this word, it is because they have no dawn.

Berean Study Bible
To the law and to the testimony! If they do not speak according to this word, they have no light of dawn.

King James Bible
To the law and to the testimony: if they speak not according to this word, it is because there is no light in them.

New American Standard Bible
To the law and to the testimony! If they do not speak according to this word, it is because they have no dawn.

American Standard Version
To the law and to the testimony! if they speak not according to this word, surely there is no morning for them.

Darby Bible Translation
To the law and the testimony! If they speak not according to this word, for them there is no daybreak.

Douay-Rheims Bible
To the law rather, and to the testimony. And if they speak not according to this word, they shall not have the morning light.

English Revised Version
To the law and to the testimony! if they speak not according to this word, surely there is no morning for them.

Young's Literal Translation
To the law and to the testimony! If not, let them say after this manner, 'That there is no dawn to it.'

Isaiah 8:20 Bible Hub
Isaiah 8:20 Bible Apps
Isaiah 8:20 Open Bible