Genesis 1:3 has: "And G-d said, Let there be light, and there was light[0]." This says on the literal level that light is a created thing distinct from G-d, and thus finite (though created very close to the creation of the universe itself, on day 1).
To be clear, light is a very common metaphor for G-dliness in Judaism and the quote from John resonates as a perfectly fine metaphor, rather than a literal assertion of equivalence.
To be clear, light is a very common metaphor for G-dliness in Judaism and the quote from John resonates as a perfectly fine metaphor, rather than a literal assertion of equivalence.
[0] "וַיֹּ֥אמֶר אֱלֹהִ֖ים יְהִי־א֑וֹר וַֽיְהִי־אֽוֹר"