Metaphor, memory is being compared to a painting
For the non-believers category: Falling Rock, Spider, and Chaff.
For the wrath of God category: Storm, Bow, and Rough Wind.
"Sinners in the Hands of an Angry God" is a classic sermon of the Great Awakening. The aim of the narrative and language employed is to impose a sense of fear. It tries to make clear that hell in fact exists and all the suffering that awaits us if we refuse to confess our sins and be saved by God.
Hope this helps!
I'd say the third sentence sounds very supportive, it supports the idea and positivity that service brings.