Which preposition to use with harmlessness

of Occurrences 6%

In answer to his confidence in the harmlessness of our intentions, we rowed away back to the island where we started him.

to Occurrences 1%

The Indian and white hunters have no fear of it in most parts of the country, and its harmlessness to man is proverbial.

unto Occurrences 1%

Leading a life of harmlessness unto all creatures, he is truth-telling and firm in his vows, and in his house the gods are ever gratified by sacrifices held according to the ordinance.

with Occurrences 1%

That is my certificate of harmlessness with those that are about the Emperor.

Which preposition to use with  harmlessness