Wiktionary
bear in upon
vb. (context literary rare English) Induce somebody to realize something, to impress a realization upon a person, usually in a gradual way.
Usage examples of "bear in upon".
But his gardening made him attentive to the heavens, and the proximity of the Bun Hill gas-works and the Crystal Palace, from which ascents were continually being made, and presently the descent of ballast upon his potatoes, conspired to bear in upon his unwilling mind the fact that the Goddess of Change was turning her disturbing attention to the sky.