‘And I heard a great voice out of the Temple, saying to the seven angels “Go, and pour out the seven bowls of the wrath of God into the earth”.'
The great voice may be that of a living creature (see Revelation 6:1; Revelation 6:3; Revelation 6:5; Revelation 6:7; Revelation 8:13 - compare Revelation 15:7), or it may be the voice of God Himself. What is important is that it stresses that this is the will of God. Tribulations and disasters are one way by which God speaks to the world. There is emphasis now on the wrath of God. The world lies continually under His wrath (Romans 1:18), and in the end it has to be satisfied.