We don’t have much information in the Bible about other heavenly beings that God created. Two creatures are mentioned that also worship, serve, and praise God. It is possible that the seraphim (seraphs) and cherubim (cherubs) are a class of angels.
Seraphim
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. 2 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. 3 And one cried to another and said:
“Holy, holy, holy is the LORD of hosts; the whole earth is full of His glory!” 4 And the posts of the door were shaken by the voice of him who cried out, and the house was filled with smoke.
5 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.” 6 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. 7 And he touched my mouth with it, and said:
“Behold, this has touched your lips; your iniquity is taken away, and your sin purged.” (Isa. 6:1-7)
There are very few passages in the Bible that mention the seraphim. We see here that they are positioned over the throne of God. They had six wings. With two wings they covered their eyes, two wings covered their feet, and two were used to fly.
Why did they cover their eyes? Perhaps it was because of the glorious bright light shining forth from the Lord. That blinding light once came from Jesus on earth when He was transfigured on the mount (Matt. 17:1,2) and also when Jesus blinded Saul on the road to Damascus (Acts 9:3). Others think it showed a blind obedience to the will and commands of God. Did they cover their eyes because they did not want to look upon the prophet Isaiah because of his sin? We don’t know the answer. We also don’t know why they covered their feet. When Moses stood on holy ground when speaking to God, he had to remove his shoes out of respect and reverence to the Lord. Perhaps this was why the seraphim covered their feet. It was an act of humility and reverence to their Creator.
Notice they cried out three times that the Lord was holy. This may have reference to the Trinity consisting of the Holy Father, the Holy Son, and the Holy Spirit. In the Bible, the number three denotes divine completeness and perfection. Saying something more than once denotes the importance of the message. The Lord Jesus Christ is truly holy, holy, holy!
It appears that the four living creatures that the Apostle John saw in his vision in Revelation were the seraphim.
And in the midst of the throne, and around the throne, were four living creatures full of eyes in front and in back. 7 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. 8 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!” (Rev. 4:6-8)
What an awesome thought to realize that these beings speak continuously day and night praising the Lord for His wonderful holiness!
Cherubim
When Adam and Eve were cast out of the Garden of Eden for their disobedience to God, He placed cherubim at the east of the garden to keep anyone from entering and eating of the tree of life. God did not want mankind to have to live in his sin for all eternity.
22 Then the LORD God said, “Behold, the man has become like one of Us, to know good and evil. And now, lest he put out his hand and take also of the tree of life, and eat, and live forever”— 23 therefore the LORD God sent him out of the garden of Eden to till the ground from which he was taken. 24 So He drove out the man; and He placed cherubim at the east of the garden of Eden, and a flaming sword which turned every way, to guard the way to the tree of life. (Gen. 3:22-24)
God gave Moses specific instructions on how to build the Ark of the Covenant. The ark was somewhat like a box and inside the ark were the Ten Commandments on two tables of stone, Aaron’s budded rod, and a pot of manna from heaven. The ark had a lid called the mercy seat and cherubs, one at each end, faced each other with their wings stretched out. It was here, between the two cherubs that the divine presence of God abode with His chosen people Israel and communicated with them. The ark would normally reside in the holy of holies in the tabernacle or the temple.
17 “You shall make a mercy seat of pure gold; two and a half cubits shall be its length and a cubit and a half its width. 18 And you shall make two cherubim of gold; of hammered work you shall make them at the two ends of the mercy seat. 19 Make one cherub at one end, and the other cherub at the other end; you shall make the cherubim at the two ends of it of one piece with the mercy seat. 20 And the cherubim shall stretch out their wings above, covering the mercy seat with their wings, and they shall face one another; the faces of the cherubim shall be toward the mercy seat. 21 You shall put the mercy seat on top of the ark, and in the ark you shall put the Testimony that I will give you. 22 And there I will meet with you, and I will speak with you from above the mercy seat, from between the two cherubim which are on the ark of the Testimony, about everything which I will give you in commandment to the children of Israel. (Ex. 25:17-22)
We don’t know what the cherubim looked like other than the fact that they apparently had wings. Perhaps the wings of the seraphim and cherubim have given rise to the thought that angels have wings.