The creatures call for the
       Four Horsemen to appear, Revelation 6:1-8,

               One hands the Seven Vial Angels
               the Golden Vials filled with the
               Wrath of God, Revelation 15:7,
 
       And when they give glory and honor and thanks to Him that sits upon the Throne, who lives forever and ever, the Four and Twenty Elders fall down before Him that sits upon the Throne, and worship Him. . .and cast their crowns before the Throne, saying, "Thou art worthy, O Lord, to receive glory and honor and power; for Thou hast created all things and for Thy pleasure they are and were created." Revelation 4:9-11