Perception is everything.  What is perceived in the sky, will be both projected and reflected upon the face of the waters of our heart, our conscience.  Apostle John, "...stood upon the sand of the sea."  This is to show us something from Ishmael's point of view; or how the orphan spirit, who doesn't know God as "Abba-Father", interprets things.

He sees, "...in heaven," not a Lamb; but, "...a great red (fiery) dragon, having seven heads and ten horns, and seven crowns upon his heads."  Because what is perceived in the sky, will be both projected and reflected upon the face of the waters of our heart, our conscience; therefore, Apostle John notices, "...a beast rise up out of the sea, having seven heads and ten horns, and upon his horns ten crowns, and upon his heads the name of blasphemy."  Behold, the Orphan (anti-Christ) spirit, which trusts that it can rise to the occasion, to meet all of the unrealistic demands of... to be thoroughly pleasing unto... its very own Dragon-Father, or Pharaoh-Father.

"Like" produces "like".  Notice the similar qualities, or characteristics.  The Great Fiery Dragon in heaven has seven heads and ten horns, with seven crowns upon his seven heads.  The beast which rises up out of the sea, likewise, has seven heads and ten horns, but with ten crowns upon his ten horns.  Therefore, the emphasis of each is slightly different.  The Dragon-Father or Pharaoh-Father emphasizes "seven", or "perfection".  The Orphan-spirit perceives this "seven" or "perfection" as relating to its own "performance" or "obedience"; and therefore, the Orphan-spirit emphasizes "ten" or "dead letter of religious law"...; because this is how the Orphan-spirit thinks it can satisfy all of the performance requirements and/or obedience standards of its very own, eternally angry, fire-breathing Dragon-Father, or Pharaoh-Father.

This "10" signifies, especially (but it is not limited unto...), the "holy books" of the Big Three Sisters: Judaism (Moses' Torah), Islam
(Mohammed's Quran), and Modern-day "christianity" (the dead letter of "what the Bible says").