Abyssus abyssum invocat! Caelitus mihi vires de profundis!

Hello, teachers

I am translating an English book and it has some Latin sentences that I don't understand.
Of course I tried to look it up on the internet, but it didn't make any sense.
Google translation says it means
"Deep calls! From the depths to befriend me strength."
But it doesn't make sense at all.
Could you tell me what does this following Latin sentence mean?
"Abyssus abyssum invocat! Caelitus mihi vires de profundis!"

Thank you in advance.