Isaiah 40:28 (KJV)

Passage

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.

Nearby Context

Isaiah 40:26 Lift up your eyes on high, and behold who hath created these things, that bringeth out their host by number: he calleth them all by names by the greatness of his might, for that he is strong in power; not one faileth.

Isaiah 40:27 Why sayest thou, O Jacob, and speakest, O Israel, My way is hid from the LORD, and my judgment is passed over from my God?

Isaiah 40:28 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.

Isaiah 40:29 He giveth power to the faint; and to them that have no might he increaseth strength.

Isaiah 40:30 Even the youths shall faint and be weary, and the young men shall utterly fall:

Study Lenses

The verse centers on "hast", "thou", "known", "heard", "everlasting", and "lord". It is saying that the verse draws attention to "hast" and "thou", so its meaning should be read from those terms before moving to application.

The nearby context moves from verse 27's "Why sayest thou O Jacob and speakest..." into verse 29's "He giveth power to the faint and...", so "hast" and "thou" belong inside that flow. In Isaiah context, the local focus is the Holy One of Israel, judgment and restoration, the servant of the LORD, and Zion's hope.

A plain takeaway is to answer the verse's own emphasis on "hast" and "thou" with trust shaped by these words, not by a vague optimism outside the passage.