Augustine of Hippo
The sun symbolizes time. Thus, His name will remain everlasting. Eternity exists before time and transcends it. In Him, all nations of the earth will find blessing, as the promise made to Abraham has come to fruition in Him. He refers not to "seeds," implying many, but rather to "Seed," which is Christ. (Gal. 3:16) Abraham was assured that through his Seed, all nations of the earth would be blessed. (Gen. 22:18) It is not the physical descendants, but rather the children of promise who are included among the Seed. (Rom. 9:8) All peoples will exalt Him. To clarify what has previously been stated, this idea is reiterated.
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As they are blessed in Him, they will also honor Him—not by elevating Him through their own efforts, for He is inherently great, but by acknowledging and proclaiming His greatness. We glorify God in this way, as we declare, Hallowed be thy name, (Matt. 6:9) which is eternally sacred.