Isaiah 40:28

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.

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?

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.

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

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

Do read the surrounding verses too, because the context often says more than a single verse.

Compare

BSB
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.
KJV
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.
WEB
Haven’t you known? Haven’t you heard? The everlasting God, the LORD, the Creator of the ends of the earth, doesn’t faint. He isn’t weary. His understanding is unsearchable.
ASV
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.
DARBY
Dost thou not know, hast thou not heard, that the everlasting God, Jehovah, the Creator of the ends of the earth, fainteth not nor tireth? There is no searching of his understanding.
BLB
Have you not known? Or have you not heard? God everlasting [is] YHWH, the Creator of the ends of the earth. He does not faint and He does not grow weary; [there is] no searching out of His understanding.
ÅB
Vet du det ikke, eller har du ikke hørt det? Herren er en evig Gud, den som har skapt jordens ender; han blir ikke trett, og han blir ikke mødig; hans forstand er uransakelig.
OTB
Vet dere ikke? Har dere ikke hørt? Herren er den evige Gud, Skaperen av jordens ender. Han blir ikke trett eller sliten, og Hans forståelse er utenfor menneskelig rekkevidde.
B1930
Vet du det ikke, eller har du ikke hørt det? Herren er en evig Gud, den som har skapt jordens ender; han blir ikke trett, og han blir ikke mødig; hans forstand er uransakelig.

Study notes (Tyndale)

Original text and word study

Cross references