Commento su Salmi 120:4

Sharpened arrows of a mighty man Behold you kill in a distant place like an arrow.

1. You are like sharp arrows in the warrior's hands, because he kills with them from a distance. So too you, who are speaking lashon hara and you will kill the one who is standing at a distance.

with coals of brooms All coals, when extinguished on the outside, are extinguished on the inside, but these extinguish themselves on the outside but not on the inside (ibid.). Another explanation: What will He give you? What is the Holy One, blessed be He, destined to decree upon you? Arrows of a mighty man with coals of brooms. His arrows from above and Gehinnom from below.

2. You are like coals made from rotem (juniper) wood, because although they seem to be extinguished on the outside, they are still burning on the inside. So too you, who [externally] speak smoothly to a person, but privately you are speaking lashon hara about him.