Now when the seven thunders uttered their voices, I was about to write; but I heard a voice from heaven saying to me, "Seal up the things which the seven thunders uttered, and do not write them."
Revelation 10:4
Surrounding context
10:3 and cried with a loud voice, as when a lion roars. When he cried out, seven thunders uttered their voices.
10:4 Now when the seven thunders uttered their voices, I was about to write; but I heard a voice from heaven saying to me, "Seal up the things which the seven thunders uttered, and do not write them."
10:5 The angel whom I saw standing on the sea and on the land raised up his hand to heaven