Revelation 4

6 Also in front of the throne there was what looked like a sea of glass,clear as crystal. In the centre, around the throne, were four living creatures, and they were covered with eyes, in front and in back. 7 The first living creature was like a lion, the second was like an ox, the third had a face like a man, the fourth was like a flying eagle.  
I didn't really understand this, can't grasp this without looking at google images or reading my application notes. Never understood the point of different of different creatures but apparently they can be interpreted as different attributes of God. Ezekiel saw similar creatures in one of his visions (Ezekiel 1:5-10)
Lion - Majesty and Power
Ox - Faithfulness
Man - Intelligence
Eagle - Sovereignty