John must have been so amazed, and considered himself to be so greatly blessed, to have been able to see some of the things shown to him.

Revelation 5:5 And one of the elders saith unto me, Weep not: behold, the Lion of the tribe of Juda, the Root of David, hath prevailed to open the book, and to loose the seven seals thereof.

  6 And I beheld, and, lo, in the midst of the throne and of the four beasts, and in the midst of the elders, stood a Lamb as it had been slain, having seven horns and seven eyes, which are the seven Spirits of God sent forth into all the earth.

John is told to behold the Lion of the tribe of Juda.

Then John beheld a Lamb as it had been slain.

He is told to behold the Lion, but he beholds the Lamb!

First, that must have been shocking.

Then, he describes the Lamb as a Lamb as it had been slain.

He didn't say a dead lamb, but the Lamb is clearly alive.

So, what did, "as it had been slain", appear like?

Did John see the marks of the crucifixion?

Did he, for that brief moment, see fresh blood?

Also, John didn't say that he beheld Jesus as he had been slain, but that he beheld a Lamb as it had been slain.

Could it be, that for that moment, that he saw both the crucified, resurrected Jesus, yet simultaneously in the vision somehow as a slain lamb?

Does John continue to see Jesus that way, since the term Lamb is used 27 times in the book of Revelation?

If so, then it is not a vision of the kind of lamb that David used to shepherd, e.g. the Lamb takes the book and opens the seals.

The Lamb that John sees also has seven horns and seven eyes.