Here "hip and thigh" refers to the whole body. This is a graphic description of how Samson killed the Philistines. AT: "He cut their bodies to pieces" (See: [[rc://en/ta/man/translate/figs-synecdoche]])
# he went down
Here the phrase "went down" does not likely mean that he changed elevation, but rather, it is a way to describe someone going to another place. AT: "he went" (See: [[rc://en/ta/man/translate/figs-idiom]])