To "bear" or carry an abstraction like sickness and sorrow represents taking it up. Alternate translation: "he has taken our sicknesses and sorrows upon himself" (See: [[rc://en/ta/man/translate/figs-metaphor]])
This can be stated in active form. Alternate translation: "yet we thought God was punishing and afflicting him" (See: [[rc://en/ta/man/translate/figs-activepassive]] and [[rc://en/ta/man/translate/figs-explicit]])