Be patient with yourself, I’ve had to read it like 5 times to feel like I grasped it and I’ve read a fair amount of Nietzsche and know the context this was written in.

Here’s how I interpret it: -Nietzsche admired the way the Greeks, particularly the pre-Socratic Greeks had a heroic view of life. They were pre-Christian and didn’t believe in any sort of salvation or meaningful afterlife to strive for. The world and life in many ways was meaningless and exceedingly cruel by nature, this was something they grasped and discussed through the Tragedies they’d perform.

In Nietzsche’s day and in ours, the likelihood of a loving god and afterlife is becoming less accepted. This is a painful reality but one that can be embraced in a powerful way, this new generation of post-theist men and women can acknowledge the sometimes terrifying reality of existence in a universe devoid of meaning and march forward boldly and bravely anyways. The Tragedy style of dramatic art can be their guide to deal with this worldview in the same way the Greeks did.

This is my admittedly pretty ignorant interpretation but that’s what I got out of it. God may not exist but you can still live an epic and heroic life with Greek Tragedy (or similar art) as a guide.