5:6 And I saw between the throne (with the four living creatures) and the elders a Lamb standing, as if slain, having seven horns and seven eyes, which are the seven Spirits of God, sent out into all the earth.

And I saw between the THRONE (with the four living creatures) and the ELDERS, a LAMB standing

What a shock! In the previous verse, the elder tells John of a LION, a RULER after David, and an "overcomer". But here He appears as a LAMB. Overwhelmed by the throne, the 4 living creatures, the 24 elders, lightning and thunder, and a greenish halo rainbow, John almost didn't see the LAMB! How unobtrusive He is!

The fact that the LAMB is standing denotes action. Isaiah indicates that the earth will tremble in that day when He arises (Isaiah 2:17-19). At the stoning of Stephen (Acts 7:54-56), when he looked into heaven he saw Jesus standing at the right hand of God.

The Redeemer is a LAMB who gave all to purchase the precious. Jesus himself describes it is the Kingdom parable, Matthew 13:36-43. How clearly this refers to what we see in Revelation chapter 5.

as if slain,

Jesus will always carry the marks of the redemption price, Luke 24:36-40.

having seven HORNS

Seven is the number of completion. Horns denote power; in contrast, "the beast" had 10 horns (Revelation 13:1). Either this is "I am greater than you" or a show of force on the part of "the beast". Another beast had two horns "like a lamb" (Revelation 13:11). This one tries to be the great imitator. But it falls short of completion (7 horns) .

and seven eyes, which are the seven Spirits of God, sent out into all the earth.

We have seen this before in Revelation 1:4 and Revelation 4:5. There also is a relationship between the redeemed and the seven Spirits. In Zechariah 3, Joshua is accused by satan (not unlike the Revelation indicates the devil does) and a prophesy is given about a stone with seven eyes (complete understanding of the removal of iniquity). Later in Zechariah 4:9-10, the seven lamps and fires are equivalent to the eyes (seven Spirits). And they are going back and forth throughout the earth watching. In fact, even as you are reading this, you are being watched by these seven eyes. You can't hide from the Spirit of God!

In general the "LAMB" = the Lord Jesus Christ. The LAMB is referred to:

These also link to the Old Testament Passover Lamb; Exodus 12:5ff, with the Davidic Messiah; and with the Suffering Messiah; Isaiah 42-53. In Revelation we see Jesus the TRUE Messiah.