Wiktionary
vb. (context transitive English) A slightly more formal form of ''dwell on''.
Usage examples of "dwell upon".
And as they who have written before us in the Greek or in the Latin tongue against such errors as these have said much concerning this matter, I have thought it unnecessary to dwell upon it.
And so, Gwylly and Black searched woodland, hunting birds, leaving the legends for others to dwell upon.
Since he could do nothing whatever about them, he knew that allowing himself to dwell upon them, with morbid fears, was a form of self-indulgence he could no longer give mental lease.
For as the land is assigned to the forest and the sea to its waves, so also those who dwell upon earth can understand only what is on the earth, and he who is above the heavens can understand what is above the height of the heavens.
Most people who daydream of transforming themselves into some vicious beast and going about tearing people's throats out, dismembering them, disfiguring them and perhaps devouring them tend mainly to dwell upon how much fun it would be and generally neglect the practicalities of the situation.
But in any case, they were not things which a healthy mind would want to dwell upon, not if a man desired to sleep soundly.
With no reason to dwell upon the condition of Meander, I continued, ".