The prophet Isaiah who according to Isaiah 1:1 was a prophet in the 8th century BCE and according to Isaiah 11, there were Jews already exiled in Egypt in his time period.
Isaiah 11:11- And it shall come to pass in that day, that the Lord
shall set his hand again the second time to recover the remnant of his
people, which shall be left, from Assyria, and from Egypt, and from
Pathros, and from Cush, and from Elam, and from Shinar, and from
Hamath, and from the islands of the sea.
12 And he shall set up an ensign for the nations, and shall assemble
the outcasts of Israel, and gather together the dispersed of Judah
from the four corners of the earth.
I know of the Jewish Elephantine community which some sources say go back to the 5th century BC but there were other sources that claimed they go back as far as the 8th century BC but I couldn’t find evidence of that extra biblically. I understand that there was a large population of Jews in Egypt especially by the time of Alexander The Great. However, my question is there specific extra biblical evidence of Jews in Egypt in the 8th century BCE or even in the 9th century BCE?