The dragon, furious because of his inability to sweep the church away, went off to make war on the woman’s offspring. To that end the dragon relocated himself to “the sand of the sea” (Revelation 12:17). In Scripture, the sea
is descriptive of all that is under the earth. Scripture sees three parts to God’s world; Exodus 20:4 speaks of“heaven above” (where God dwells with his angels and the deceased saints), the “earth beneath” (where people live in this present existence), and the “water under the earth.” The latter includes the “bottomless pit” (abyss) mentioned in Revelation 9:1 and Revelation 11:7, and thus also the home of the demons of hell (Isaiah 27:1; 2 Peter 2:4). The beast's rising “out of the sea,” then, identifies this beast as hellish, demonic.
1 And I saw a beast rising out of the sea, with ten horns and seven heads, with ten diadems on its horns and blasphemous names on its heads.