This can be stated in active form. Alternate translation: "just as a person cuts away the fat of the lamb" (See: [[rc://en/ta/man/jit/figs-activepassive]])
The abstract noun "atonement" can be stated as a verb. Alternate translation: "will atone for the sin the person committed" (See: [[rc://en/ta/man/jit/figs-abstractnouns]])