"Priest" is just an old word for "expert".

Hadn't listened to this in ages, the words sure hit more than they used to:

We've taken care of everything

The words you read, the songs you sing

The pictures that give pleasure to your eyes

It's one for all and all for one

We work together, common sons

Never need to wonder how or why

We are the priests of the Temples of Syrinx

Our great computers fill the hallowed halls

We are the priests of the Temples of Syrinx

All the gifts of life are held within these walls

Look around at this world we've made

Equality, our stock in trade

Come and join the Brotherhood of Man

What a nice contented world

Let the banners be unfurled

Hold the Red Star proudly high in hand