The previous two verses already said that they surrounded him. Why is "Sabuni" repeated again?
Refer to 118:11:1:1-2.
What is the comparison to bees?
Malbim: They stung like bees.
What is the meaning of "Do'achu"?
Rashi: This refers to jumping. Therefore it applies to fire and water - "Nid'achu mi'Mekomam", "Nero Alav Yid'ach" (Iyov 6:17, 18:6), like a flame is uprooted from the wick and goes up when it extinguishes.
Radak: This refers to extinguishing, like "Yid'ach Nero" (Mishlei 20:20); the subject was not mentioned.
What is the comparison to "Esh Kotzim"?
Radak: When thorns burn, the fire extinguishes quickly; they do not make coals.
Malbim: All of them were burned.