After the dragon (Satan) comes two separate beasts, described in terrifying detail. The first rises from the ocean (Godzilla anyone?) with ten horns and seven heads, with various body parts of a leopard, a lion, and a bear. The second beast rises from the earth, has horns like a ram, and speaks like a dragon. It should not escape our notice that at the end of the First century, gladiatorial combat was a widespread form of entertainment in the Roman Empire. This could play into the "beast" imagery.
Christians have been speculating for two millennia about what to make of these "beasts," and especially the "number of the beast," which depending on the manuscript, could be either 616 (Grand Rapids, beware!) or 666. Most scholars believe that, based on the Jewish mystic art of gematria (assigning numbers to letters) the number corresponds to the lengthy title of the Roman Emperor at the time, Nero, who was infamous for his persecution of Christians. But of course you couldn't very well send out a letter through Asia Minor telling people "Nero is the servant of Satan" without getting lots of people killed. Therefore, some obfuscation was needed.
For followers of Jesus, however, the identity of the "beast," or the significance of his number, is beside the point. We should be laser focused on John's clear message in v9-10:
"Let anyone who has an ear listen: If you are taken into captivity you go; if you kill with the sword, with the sword you will be killed. Here is a call for the endurance and faith of the saints."
Who the beast is, and how to defeat him, is God's problem, not ours. We testify, we endure, and we keep faith. Period. In good times and in the belly of the beast, we are nonviolent followers of the lamb. I will share my poetic interpretation below, but I can't presume to do better than Martin Luther:
Though hordes of devils fill the land,
all threat'ning to devour us,
we tremble not, unmoved we stand,
they cannot overpow'r us.
Let this world's tyrant rage;
in battle we'll engage!
His might is doomed to fail;
God's judgment must prevail!
One little word subdues him.
My poetic interpretation of Revelation 13
13. A wicked beast emerges from the sea
With seven heads, ten horns, ten diadems,
Inscribed all ‘round with names of blasphemy;
He stalks the saints and would make war on them.
No earthly strength of ours can match his might,
Though he gains worship, pow’r and influence;
Forbidden are the saints with swords to fight
Endurance, and the Lamb, are your defense.
A second beast, with wonders, we behold,
False resurrections count among his feats;
Without his mark shall naught be bought or sold:
And Empire’s number, ever incomplete.
Fear not, when you his vicious wonders see;
The faithful captives soon shall be set free.