Inishie no kami no miyo yori morogami no inoru iwai wa kimi ga yo no tame - Senzai Wakashu(English Translation & Meaning)

いにしへの神の御代より諸神の
祈る祝ひは君が代のため

Roma-ji: Inishie no kami no miyo yori morogami no inoru iwai wa kimi ga yo no tame
English Translation: Since the ancient days
when the gods held sway, all
the many gods
in the blessings that they pray
pray for my lord's reign
Meaning: Ever since the ancient age of the gods, all the blessings the many gods have prayed for have been for the sake of my lord's reign.
Commentary: Book Twenty Shinto Poems 1283

Headnote: "Composed on Morokami village as a song for the sacred dances of the Yuki side at the Great Thanksgiving Festival in the reign of Emperor Horikawa, in the first year of Kanji"
He composed this on Morokami village as a song for the sacred dances of the Yuki side at the Great Thanksgiving Festival of Emperor Horikawa in 1087. The headnote in the main text has a different character for the festival's name, which appears to be an error. Since the ancient age of the gods, the blessings the many gods pray for are for my lord's reign, he says. Taking the place name Morokami as "the many gods," he celebrates the reign on a grand scale: all that the gods have prayed for since the age of the gods has been for the emperor's reign.
The author, "Former Middle Counselor Masafusa," is Ōe no Masafusa. A son of Ōe no Narihira, he rose to provisional middle counselor. A renowned scholar, he served three emperors, Go-Sanjō, Shirakawa and Horikawa, and wrote the Gōke Shidai among other works.
Following the Suki poems, this one is a Yuki poem. 1287 in this book also sings of Morokami village for the Yuki side, and both celebrate the sovereign through the name "many gods."

First line, "inishie no": "of long ago."
Second line, "kami no miyo yori": "since the age when the gods held sway."
Third line, "morogami no": "of the many gods," working in the Yuki place name Morokami. It is the same word as "morogami no" in the first line of 1287 in this book.
Fourth line, "inoru iwai wa": "iwai" is the gods' blessing and prayer.
Fifth line, "kimi ga yo no tame": "for my lord's reign," closing on a noun. Like "yorozuyo no tame" in the fifth line of 1281 in this book, it ends on "tame," for the sake of.
Author: Oe no Masafusa
Source: Senzai Wakashu
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