In effect, a bitter war broke out over questions of Jewish identity.

The question of identity then becomes fundamental to the plot.

Some questions of identity are harder to resolve than others.

There is the question of identity: we don't know who will be sent to kill you.

It is a theoretical solution for the question of personal identity.

If the body was disfigured, then the question of true identity comes into play.

But at least the question of identity would be answered.

Again it comes back to the question of identity.

And so now he's on to the question of identity.

That seemed a more immediately important point to clear up than the question of identity.