New International Version
I watched as the Lamb opened the first of the seven seals. Then I heard one of the four living creatures say in a voice like thunder, "Come!"

American Standard Version
And I saw when the Lamb opened one of the seven seals, and I heard one of the four living creatures saying as with a voice of thunder, Come.

Berean Study Bible
Then I watched as the Lamb opened one of the seven seals, and I heard one of the four living creatures say in a thunderous voice, “Come!”

Douay-Rheims Bible
And I saw that the Lamb had opened one of the seven seals, and I heard one of the four living creatures, as it were the voice of thunder, saying: Come, and see.

English Revised Version
And I saw when the Lamb opened one of the seven seals, and I heard one of the four living creatures saying as with a voice of thunder, Come.

King James Bible
And I saw when the Lamb opened one of the seals, and I heard, as it were the noise of thunder, one of the four beasts saying, Come and see.

World English Bible
I saw that the Lamb opened one of the seven seals, and I heard one of the four living creatures saying, as with a voice of thunder, "Come and see!"

Young's Literal Translation
And I saw when the Lamb opened one of the seals, and I heard one of the four living creatures saying, as it were a voice of thunder, 'Come and behold!'

Revelation 6:1 Additional Translations ...