If chapters 6 through 18 of Revelation are to be understood as being in chronological order,

when do the kings come back out from hiding from the wrath:

Revelation 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;

  16 And said to the mountains and rocks, Fall on us, and hide us from the face of him that sitteth on the throne, and from the wrath of the Lamb:

  17 For the great day of his wrath is come; and who shall be able to stand?

To face the wrath, by attacking Jerusalem as Jesus returns?

Psalms 2:2 The kings of the earth set themselves, and the rulers take counsel together, against the LORD, and against his anointed, saying,

  3 Let us break their bands asunder, and cast away their cords from us.

Zechariah 14:2 For I will gather all nations against Jerusalem to battle; and the city shall be taken, and the houses rifled, and the women ravished; and half of the city shall go forth into captivity, and the residue of the people shall not be cut off from the city.

  3 Then shall the LORD go forth, and fight against those nations, as when he fought in the day of battle.