This is the title to a song, originally belonging to the evangelist revival camp meeting category, which has the chorus:
Give me that old time religion,
Give me that old time religion,
Give me that old time religion,
Cos it’s good enough for me.
It has been taken up by the SF filk community (‘filk’ = folk singing, but with funny or parodying lyrics), which has added verses like:
Let’s sing praise to Aphrodite
She may seem a little flighty,
But she wears a green gauze nighty,
And she’s good enough for me.
and the Lovecraftian:
We will worship old Cthulhu,
Yes, we’ll worship old Cthulhu,
I can’t find a rhyme for Cthulhu
And that’s good enough for me.