In Revelation 5:8-9, after the Lamb (Jesus Christ) has taken the book that could not be opened by any other, the four beasts and twenty-four elders fall down before Him and sing a new song. The four beasts in Revelation match the four living creatures of Ezekiel chapter one and the four cherubim of Ezekiel chapter ten. These four are at the four corners of the throne of God (Ezekiel 10:9). Though I cannot specifically identify the 24 elders of Revelation, they are also found "round about the throne" (Revelation 4:4). If they also stood at the four corners of the throne, there would be six of them at each corner. Six elders and one beast at each corner would make seven heavenly beings at each corner of the throne of God in heaven singing praise unto Him. Seven is God's perfect number of completion. What a wonderful picture!