Believe it or not, the title’s question above has an incredibly simple answer, but the things you must understand to grasp it are not so easy. Let us start with another question.
“In the year that King Uzziah died, I saw the Lord sitting on a throne, high and lifted up, and the train of His robe filled the temple. Above it stood seraphim; each one had six wings: with two he covered his face, with two he covered his feet, and with two he flew. And one cried to another and said: ‘Holy, holy, holy is the Lord of hosts; the whole earth is full of His glory!’ And the posts of the door were shaken by the voice of him who cried out, and the house was filled with smoke. So I said: ‘Woe is me, for I am undone! Because I am a man of unclean lips, and I dwell in the midst of a people of unclean lips; for my eyes have seen the King, The Lord of hosts.’ Then one of the seraphim flew to me, having in his hand a live coal which he had taken with the tongs from the altar. And he touched my mouth with it, and said: ‘Behold, this has touched your lips; your iniquity is taken away, and your sin purged.’ Also I heard the voice of the Lord, saying: ‘Whom shall I send, and who will go for Us?’ Then I said, ‘Here am I! Send me.’” Isaiah 6:1-8.
“For this they [scoffers] willfully forget: that by the word of God the heavens were of old, and the earth standing out of water and in the water, by which the world that then existed perished, being flooded with water. But the heavens and the earth which are now preserved by the same word, are reserved for fire until the day of judgment and perdition of ungodly men.” 2 Peter 3:5-7.
“Before the throne there was a sea of glass, like crystal. And in the midst of the throne, and around the throne, were four living creatures full of eyes in front and in back. The first living creature was like a lion, the second living creature like a calf, the third living creature had a face like a man, and the fourth living creature was like a flying eagle. “And the four living creatures, each having six wings, were full of eyes around and within. And they do not rest day or night, saying: ‘Holy, holy, holy, Lord God Almighty, Who was and is and is to come!’” Revelation 4:6-8.