When I saw him, I fell at his feet as though dead. But he laid his right hand on me, saying, "Fear not, I am the first and the last, and the living one. I died, and behold I am alive forevermore, and I have the keys of Death and Hades."
#revelation 1:17-18

"Death and Hades" in this passage are Hades and Thanatos in the Greek. Death and Sheol (the Hebrew equivalent of Hades) are frequently mentioned together in ancient Jewish writings, often personified as active forces. Pagan deities often evolved from personified forces of nature and so were named by the forces they represented.