Which preposition to use with inscrutability

of Occurrences 3%

I reflected upon the inscrutability of war and of this deadly fighting that was going on all about me.

with Occurrences 1%

When Lee Foster Hartman created his Chinese hero in "The Poppies of Wu Fong," dramatized Oriental inscrutability with Occidental suavity and sureness, and set off the Oriental gentleman in American surroundings, he brought together the nations in a new vision of the brotherhood of man.

Which preposition to use with  inscrutability