Они от мира, потому и говорят по-мирски, и мир слушает их.
They are from the world and therefore speak from the viewpoint of the world, and the world listens to them.
They are from the world; therefore they speak from the world, and the world listens to them.
They are from the world; therefore they speak as from the world, and the world listens to them.
Those people belong to this world, so they speak from the world’s viewpoint, and the world listens to them.
They are of the world: therefore speak they of the world, and the world heareth them.
They are of the world. Therefore they speak as of the world, and the world hears them.
They are of the world; for this reason they speak [as] of the world, and the world hears them.