Question: what are coals of juniper?
Answer: The expression “coals of juniper” used in Psalms 120:4 — “burning coals” in Moffatt, “live broom coals” in Goodspeed, “coals of broom” in Jastrow, and “coals that lay waste” in Douay — refers to the fact that the wood of white broom is used extensively for making charcoal.