General Information:

The angel begins to explain to John the meaning of the prostitute and the red beast. The angel explains these things through verse 18.

was drunk with the blood ... and with the blood

"was drunk because she had drunk the blood ... and had drunk the blood"

"the believers who have died because they told others about Jesus"

"amazed" or "surprised"

The angel used this question to gently scold John. AT: "You should not be astonished!" (See: rc://en/ta/man/translate/figs-rquestion)