The noun phrase "the gain of oppression" can be expressed as a verb phrase. AT: "he who hates the riches that come from harming other people" (See: [[rc://en/ta/man/translate/figs-abstractnouns]])
This speaks of the man being safe as if he lived in a home on a high hill. These two phrase are parallel and the second phrase describes the place where the man lives. AT: "he will be safe, like a man who home is built on a high hill, in a rocky place that is easy to defend" (See: [[rc://en/ta/man/translate/figs-metaphor]] and [[rc://en/ta/man/translate/figs-parallelism]])
# the heights
This refers to a high hill or mountainside. AT: "the high hill" or "the mountainside" (See: [[rc://en/ta/man/translate/figs-metonymy]])
# the fortresses of rocks
This speaks of rocky areas that are easy to defend as if they were actually fortresses. AT: "the large piles of rocks" (See: [[rc://en/ta/man/translate/figs-metaphor]])