Asaph speaks of the clouds as if they were people pouring water out of containers. AT: "Much rain fell" or "It rained very hard" (See: [[rc://en/ta/man/translate/figs-personification]])
# your arrows flew about
This is a metaphor that describes lightning as God's arrows. AT: "the lightning you made flashed like arrows" (See: [[rc://en/ta/man/translate/figs-metaphor]])
# flew
Use your language's word for what an arrow does after someone shoots it.