NET
4 When the seven thunders spoke, I was preparing to write, but just then I heard a voice from heaven say, “Seal up what the seven thunders spoke and do not write it down.”
Darby
4 And when the seven thunders spoke, I was about to write: and I heard a voice out of the heaven saying, Seal the things which the seven thunders have spoken, and write them not.
KJV
4 And when the seven thunders had uttered their voices, I was about to write: and I heard a voice from heaven saying unto me, Seal up those things which the seven thunders uttered, and write them not.