classic waka stream

天地と相栄えむと大宮を
仕へまつれば貴く嬉しき
Roma-ji

Ametsuchi to aisakaemu to ōmiya o tsukaematsureba tōtoku ureshiki

English Translation
With heaven and earth
so to flourish evermore,
in the great palace
I serve, and in my service
how precious, how joyful
Meaning
Serving in the great palace, that we may flourish forever with heaven and earth, is a precious and joyful thing.
Commentary
Book Nineteen 4273

Headnote: "Six poems composed at imperial command at the banquet of the Niiname Festival on the twenty-fifth day"
The first of six poems composed at imperial command at the Niiname banquet, it expresses the joy of serving at court: serving in the great palace to flourish eternally with heaven and earth is truly precious and gladdening.
This is one of six poems offered at imperial command at the banquet held after the Niiname Festival on the twenty-fifth day of the eleventh month of 752. The Niiname is an important court rite in which the year's new grain is offered to the gods and partaken of by the sovereign. The left note says, "The above poem: Grand Counselor Kose no Ason."
The poet, Kose no Natemaro, was a Nara-period noble who was Grand Counselor at this time. As an elderly senior minister, he composed the first of the six.

First line, "ametsuchi to" (with heaven and earth), conveys eternity.
Second line, "aisakaemu to" (to flourish together), wishes for the reign to endure.
Third line, "ōmiya o" (the great palace), refers to the imperial residence.
Fourth line, "tsukaematsureba" (when I serve), expresses service as a subject.
Fifth line, "tōtoku ureshiki" (precious and joyful), is hypermetric and ends in the attributive form, leaving the joy lingering.
Author
Kose no Natemaro
Source
Manyoshu
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