Revelation 6:1
And I watched while the Lamb broke open one of the seven seals. Then I heard one of the four living beings saying in a thunderous voice [to the one on the white horse ?], "Come [out]."
Revelation 5:1
Then I saw in the right hand of God, who sat on His throne, a book with writing on the inside and on the back, and sealed with seven seals.
Revelation 5:5-7
Then one of the [twenty-four] elders said to me, "Do not cry; look, the Lion from the tribe of Judah, the Root of King David, has gained the victory, so He can break the seven seals on the book and open it."
Revelation 14:2
And I heard a sound from heaven like the roar of much rushing water, and like the sound of loud thunder. And the sound I heard was like people playing their harps.
Revelation 19:6
Then I heard what sounded like the voices of a huge crowd, and the sound of much rushing water, and great rolling thunder. They shouted, "Hallelujah! For the Lord, our God Almighty rules.
Acts 4:20
we cannot help but speak about the things we have seen and heard."
Revelation 4:5-7
And lightning flashes and [loud] sounds of rolling thunder came out of God's throne. And there were seven lighted torches burning in front of the throne, which are the seven Spirits of God [i.e., the Holy Spirit. See 1:4].
Revelation 6:3
And when the Lamb broke open the second seal, I heard the second living being saying [to the one on the red horse ?], "Come [out]."
Revelation 6:5
And when the Lamb broke open the third seal, I heard the third living being saying [to the one on the black horse ?], "Come [out]." So, I looked and before me [stood] a black horse, and the man riding on it had a pair of scales in his hand.
Revelation 6:7
And when the Lamb broke open the fourth seal, I heard the fourth living being saying [to the one on the pale green horse ?], "Come [out]."
Revelation 10:3-4
and he called out in a loud voice, like a roaring lion. And when he shouted, the seven thunders responded to the voice [of the angel]. [Note: These "seven thunders" have not been previously mentioned].
Revelation 11:19
Then God's Temple in heaven was opened, and inside of it was seen the Chest containing God's Agreement [i.e., between Him and Israel]. [Immediately] there came lightning flashes, [loud] sounds, rumbling thunder, an earthquake and a severe hailstorm.