Revelation 5:5-6

5Then one of the elders said to me, “Do not weep! Behold, the Lion of the tribe of Judah, the Root of David, has triumphed to open the scroll and its seven seals.”

6Then I saw a Lamb who appeared to have been slain, standing in the center of the throne, encircled by the four living creatures and the elders. The Lamb had seven horns and seven eyes, which represent the seven spirits1 of God sent out into all the earth.