You are quoting from the much disputed 1968 translation by Walter Kaufmann of The Case of Wagner
A Musicians' Problem. 1888.
The passage is not even part of the essay it is taken from an epilogue to a commentary on The Case of Wagner A Musicians' Problem. Written some time later and refering back to his Introduction to the essay written at the same time as the epilogue.

" I have granted myself some small relief. It is not merely pure malice when I praise Bizet in this essay at the expense of Wagner. Interspersed with many jokes, I bring up a matter that is no joke. "

The passage Translates from German as
*Holiness—perhaps the last thing the people and women still get to see of higher values, the horizon of the ideal for all who are by nature myopic. But among philosophers this is, like every horizon, a mere case of lack of understanding, a sort of shutting the gate at the point where their world only begins—their danger, their ideal, their desideratum.— To say it more politely: la philosophie ne suffit pas au grand nombre. Il lui faut la sainteté.

Leaving the French quote at the end in the original language to highlight the subtlety Nietzsche intended.
Kaufman however takes it upon himself to translate

la philosophie ne suffit pas au grand nombre. Il lui faut la sainteté.
as
"Philosophy is not suited for the masses. What they need is holiness.

Which is a freaking awful translation

In reality a better translation is

For many (people), philosophy is not enough. He needs holiness.

"He" in this case is the subject of the essay Wagner

I hope this is of some help in understanding the words of the author In Context