For the reaction H2(g) +S(s)-H2S(s), Triangle H= -20.2 kJ and triangle S= 43.1 J/K. WHen will the reaction be spontaneous?

Question

For the reaction H2(g) +S(s)->H2S(s), Triangle H= -20.2 kJ and triangle S= 43.1 J/K. WHen will the reaction be spontaneous?

I know that it has to be negative to be spontaneous but i don't exactly know how to answer this question.