Revelation 13 is a chapter in the New Testament of the Bible that describes two beasts. The first beast rises from the sea and is given authority by the dragon, symbolizing evil. This beast is known for its blasphemous actions and is worshipped by many. The second beast, which comes from the earth, promotes the first beast and performs miracles to deceive people. It also enforces the mark of the beast, a symbol that signifies allegiance to the first beast. This chapter highlights themes of power, deception, and the struggle between good and evil.