Here anger is spoken of as if it was something physical that Joseph could hold in his hands. AT: "What if Joseph is actually still angry with us" (See: [[rc://en/ta/man/translate/figs-metaphor]])
Avenging oneself against someone who harmed him is spoken of as if the person were paying they other person what they are owed. AT: "wants revenge for the evil thing we did to him" (See: [[rc://en/ta/man/translate/figs-metaphor]])