That Psalm is referencing fallen angels.

Psalms:83:8:
Assur also is joined with them:
they have holpen the children of Lot.
Selah.

Jude:1:7:
Even as Sodom and Gomorrha,
and the cities about them in like manner,
giving themselves over to fornication,
and going after strange flesh,
are set forth for an example,
suffering the vengeance of eternal fire.

Jude:1:16:
These are murmurers,
complainers,
walking after their own lusts;
and their mouth speaketh great swelling words,
having men's persons in admiration because of advantage.

Psalms:83:18:
That men may know that thou,
whose name alone is JEHOVAH,
art the most high over all the earth.

The prophecy of Enoch was a past event when Moses mentioned it.

Jude:1:14:
And Enoch also,
the seventh from Adam,
prophesied of these,
saying,
Behold,
the Lord cometh with ten thousands of his saints,

De:33:2:
And he said,
The LORD came from Sinai,
and rose up from Seir unto them;
he shined forth from mount Paran,
and he came with ten thousands of saints:
from his right hand went a fiery law for them.