For the man was more than forty years old, on whom this miracle of healing was wrought.
For the man was above forty years old, on whom this miracle of healing was shewed.
For the man on whom this sign (miracle) of healing was performed was more than forty years old.
because the man who had experienced this sign of healing was over 40 years old.
For the man in whom this sign of a cure had been accomplished was more than forty years old.
For the man was above forty years old, in whom that miraculous cure had been wrought.