Here "in the poison of bitterness" is a metaphor for being very envious. It speaks of envy as if it tastes bitter and poisons the person who is envious. Alternate translation: "very envious" (See: [[rc://en/ta/man/translate/figs-metaphor]])
The phrase "bonds of iniquity" is spoken as if iniquity could make Simon a prisoner. It is metaphor that means Simon is not able to stop himself from sinning. Alternate translation: "because you continue sinning you are like a prisoner" or "sin has made you its prisoner" (See: [[rc://en/ta/man/translate/figs-metaphor]])