New Living Translation
Have you never heard? Have you never understood? The LORD is the everlasting God, the Creator of all the earth. He never grows weak or weary. No one can measure the depths of his understanding.

American Standard Version
Hast thou not known? hast thou not heard? The everlasting God, Jehovah, the Creator of the ends of the earth, fainteth not, neither is weary; there is no searching of his understanding.

Berean Study Bible
Do you not know? Have you not heard? The LORD is the everlasting God, the Creator of the ends of the earth. He will not grow tired or weary; His understanding is beyond searching out.

Douay-Rheims Bible
Knowest thou not, or hast thou not heard? the Lord is the everlasting God, who hath created the ends of the earth: he shall not faint, nor labour, neither is there any searching out of his wisdom.

English Revised Version
Hast thou not known? hast thou not heard? the everlasting God, the LORD, the Creator of the ends of the earth, fainteth not, neither is weary; there is no searching of his understanding.

King James Bible
Hast thou not known? hast thou not heard, that the everlasting God, the LORD, the Creator of the ends of the earth, fainteth not, neither is weary? there is no searching of his understanding.

World English Bible
Haven't you known? Haven't you heard? The everlasting God, Yahweh, The Creator of the ends of the earth, doesn't faint. He isn't weary. His understanding is unsearchable.

Young's Literal Translation
Hast thou not known? hast thou not heard? The God of the age -- Jehovah, Preparer of the ends of the earth, Is not wearied nor fatigued, There is no searching of His understanding.

Isaiah 40:28 Additional Translations ...