נֹתֵ֥ן לַיָּעֵ֖ף כֹּ֑חַ וּלְאֵ֥ין אוֹנִ֖ים עָצְמָ֥ה יַרְבֶּֽה׃
Dialah yang memberi kekuatan kepada orang yang lelah, dan menambah kekuatan bagi orang yang tidak berdaya.
Tze'enah Ure'enah
“He gives strength to the weary” [40:29]. When the Holy One wants to, He gives strength to Israel who are in exile to endure the difficult exile and, He strengthens those who are not strong.3Radak, Isaiah, 40:29.
Rashi
Who gives the tired strength And who will eventually renew strength for your tiredness.
Ibn Ezra
He giveth power, etc. How can He be weary, if He gives power to the faint, and strengthens him that is without strength. עָצְמָה Strength. It is a noun similar in form to חָבְמָה wisdom.