The actions of the writer's enemies are spoken of as a financial transaction where they gave him evil things in exchange for good things. The abstract nouns "evil" and "good" can be stated as adjectives. Alternate translation: "They do evil thing to me after I was good to them" (See: [[rc://en/ta/man/jit/figs-metaphor]] and [[rc://en/ta/man/jit/figs-abstractnouns]])
The way the writer's enemies accuse him is spoken of as if they were throwing accusations at him like rocks. (See: [[rc://en/ta/man/jit/figs-metaphor]])