Swizz Beatz Delivers Moving Eulogy About DMX the Humanitarian - TMZ

 Swizz says X's purpose in life was to comfort people, despite his own, unrelenting pain.

He says DMX suffered every single day from the time they met.

 And Swizz says there's a reason ...

The tribute is heartbreaking -- Swizz says, "He would go to jail to escape his pain.

Swizz says DMZ never sold out, not even close -- "Everybody threw millions of dollars.