# bringing what he has done upon his own head

To bring someone's conduct on him represents punishing him for his bad conduct. Alternate translation: "punishing him as he deserves" (See: [[rc://en/ta/man/jit/figs-metaphor]])

# upon his own head

Here the "head" refers to the whole person. Alternate translation: "on him" (See: [[rc://en/ta/man/jit/figs-synecdoche]])

# give to him according to his righteousness

"give him what he deserves because he is innocent"