Which preposition to use with interpenetrating

with Occurrences 5%

The ordinary process of bread-making by fermentation is tedious, and much labour of human hands is requisite in the kneading, in order that the dough may be thoroughly interpenetrated with the leaven.

at Occurrences 1%

Now in the first place, I must hold that there can be no education which works primarily for character building, that is not interpenetrated at every point by definite, concrete religion and the practice of religion.

Which preposition to use with  interpenetrating