This question introduces "the man who fears Yahweh" as a new topic. Alternate translation: "I will tell you about the man who fears Yahweh." (See: [[rc://en/ta/man/translate/figs-rquestion]])
These words refer to any person who fears Yahweh, not a specific person. Alternate translation: "are those who fear ... instruct them ... they should" (See: [[rc://en/ta/man/translate/figs-genericnoun]])
Yahweh teaching people how they should behave is spoken of as if Yahweh were teaching the people what way or path they should travel. (See: [[rc://en/ta/man/translate/figs-metaphor]])