The grade of angels groups.

Heavenly Assembly-The Watchers

It is mention 150 times in Hebrew Bible. 

Psalm 82:1
GOD standeth in the congregation of the mighty, he judgeth among the gods.
Psalm 82:6-7
I have said, Ye are gods, and all of you are children of the most High.
But ye shall die like men, and fall like one of the princes.

The Watchers- Sons of GOD

Sons of GOD-Bene Ha Elohim
They are the sons of King. From the King they rule in the earth in the different parts.

Councils-Divine council of Elohim

Psalm 89:7
GOD is greatly to be feared in the assembly of the saints, and to be had in reverence of all them that are about him.
Job 15:8
Hast thou heard the secret of GOD? and dost thou restrain wisdom to thyself?
Jeremiah 23:18
For who hath stood in the counsel of the LORD, and hath perceived and heard his word? who hath marked his word, and heard it?
Jeremiah 23:22
But if they had stood in my counsel, and had caused my people to hear my words, then they should have turned them from their evil way, and from the evil of their doings.
Amos 3:7
Surely the Lord GOD will do nothing, but he revealeth his secret unto his servants the prophets.

Congregation.

It is mention 1220 times in Hebrew Bible.
They Represent the armies of GOD
Highly train,higher soldiers of GOD, Warriors of GOD.
Judges- Heavenly Judges
Nehemiah and Ezra books mention it.
Malak- They are called Messangers in the Bible.
They deliver heaven message to humans.They take human message to GOD.

Ministers.

Psalm 103:21
Bless ye the LORD, all ye his hosts, ye ministers of his, that do his pleasure.
Psalm 104:4
Who maketh his angels spirits; his ministers a flaming fire.
They serve GOD.

Daniel 7:10

A fiery stream issued and came forth from before him: thousand thousands ministered unto him, and ten thousand times ten thousand stood before him: the judgment was set, and the books were opened.

Watchers.

They are mention three times in the Old Testament.
Daniel 4:13
I saw in the visions of my head upon my bed, and, behold, a watcher and an holy one came down from heaven.
Daniel 17, 23
These watchers are called the sons of GOD.
Law enforcement officers.
They have to give GOD Laws strictly in earth.

GOD universal law.
What is it?
GOD created man and woman to unite.
Nowadays this law is going against GOD.
Man unite man
woman unite woman
The humans break GOD law.
The universal laws of GOD never change their places.
Examples: Sun, moon
But this law: man unite woman is broken in earth
Host
GOD has His own Host.
GOD of Host.

Matthew 26:53 - JESUS
Thinkest thou that I cannot now pray to my Father, and he shall presently give me more than twelve legions of angels?
2 king 6:17-Alisha
And Elisha prayed, and said, LORD, I pray thee, open his eyes, that he may see. And the LORD opened the eyes of the young man, and he saw. and, behold, the mountain was full of horses and chariots of fire round about Elisha.

Mediator Angel.

Job 33:23

If there be a messenger with him, an interpreter, one among a thousand, to shew unto man his uprightness.
They take human message directly to GOD. And God message to human.