Сие говорил Он, давая разуметь, какою смертью Он умрёт.
He said this to show the kind of death he was going to die.
He said this to show by what kind of death he was going to die.
But He was saying this to indicate the kind of death by which He was to die.
He said this to indicate how he was going to die.
This he said, signifying what death he should die.
This He said, signifying by what death He would die.
But this he said signifying by what death he was about to die.