Psalms 72:8

8 May he rule
The prefixed verbal form is a (shortened) jussive form, indicating this is a prayer of blessing.
from sea to sea,
From sea to sea. This may mean from the Mediterranean Sea in the west to the Dead Sea in the east. See Amos 8:12. The language of this and the following line also appears in Zech 9:10.

and from the Euphrates River
Heb “the river,” a reference to the Euphrates.
to the ends of the earth!
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