Who gives skill in literature & even wisdom?

“God”, and thus all glory to Him.

Yes, God gives knowledge & wisdom to people regardless of their race/religion but according to their willingness to apply “their heart” to “humble” themselves and “learn” before Him.

However, the most important wisdom pertaining to “His Word” (and mysteries) are only given “to His chosen or anointed ones” who “believe in Him”.

P/S:

Thus the saying below is always true (in all cases; and hence, it’s “not” of ourselves but a “Gift of God” too):

“you didn’t discover that knowledge but that God chose you to reveal it”

That is, He (God) might have just chosen another person instead to “discover something new” (or “achieve wisdom/knowledge”) and it would “not” have been you.

A Verse for consideration:

“As for these four youths, God gave them learning and skill in all literature and wisdom, and Daniel had understanding in all visions and dreams.” (Daniel 1:17)