The reason that the false prophet arises from the earth (during the 7th seals) is because he ran away to hide underground during the 6th seal. So when it appears that the danger is over, the false prophet will come out from the earth.

The false prophet will be the Catholic Pope at the time of the 6th seal (solar eclipse by an extra planetary body e.g. Planet X) - two horns like a Lamb. Just look at a photo of any Catholic (or Anglican bishop's)  hat - it as 2 horns that theology claims represents tongues of (Holy Ghost) fire, but in reality the "horns" represent the mouth of a the "fish-god" Dagon (or the pagan deified representation of Noah). Note that Noah came from out of the sea/water as did Jonah so they are anti-parables of the false prophet

6th seal

Rev 6:12 And I beheld when he had opened the sixth seal, and, lo, there was a great earthquake; and the sun became black as sackcloth of hair, and the moon became as blood;
Rev 6:13 And the stars of heaven fell unto the earth, even as a fig tree casteth her untimely figs, when she is shaken of a mighty wind.
Rev 6:14 And the heaven departed as a scroll when it is rolled together; and every mountain and island were moved out of their places.
Rev 6:15 And the kings of the earth, and the great men, and the rich men, and the chief captains, and the mighty men, and every bondman, and every free man, hid themselves in the dens and in the rocks of the mountains;

7th seal, 5th trumpet

Rev 13:1 And I stood upon the sand of the sea, and saw a beast rise up out of the sea (i.e.from the submarine refuge that he entered at the 6th seal), having seven heads and ten horns, and upon his horns ten crowns, and upon his heads the name of blasphemy.
Rev 13:11 And I beheld another beast coming up out of the earth (i.e. from the underground refuge that he entered at the 6th seal); and he had two horns like a lamb, and he spake as a dragon.