Interestingly, Psalm 29 mentions the voice
of God seven times, and makes it clear that this voice sounds like thunder (see Psalm 29:3). Through that voice the Lord God made things happen in the forest, wilderness, and other places of his creation. When John heard this overwhelming display of God’s voice, he was about to write down what he had heard being communicated through these thunders. Although we are not sure what this message was, John understood details being communicated that goes beyond the sheer display of God’s overpowering majesty in the thunder.
4 And when the seven thunders had sounded, I was about to write, but I heard a voice from heaven saying, “Seal up what the seven thunders have said, and do not write it down.”