Rubaiyat (Omar Khayyam)

Translation by Edgar Fitzgerald

33
Then to the rolling Heav'n itself I cried
Asking "What Lamp had Destiny to guide
Her little Children stumbling in the Dark?"
And---"A blind Understanding!" Heav'n replied.

I am anticipating that Jim has become the wise counselor to Huck, not by learned study, but by blind Understanding, the kind that comes from mystical knowing.
Look for evidence of this. Or at least look for some other explanation of what or how Jim has become such an unconditional lover.