'Angels of God' in the Bible

For in the resurrection they neither marry, nor are given in marriage, but are as the angels of God in heaven.

Also I say unto you, Whosoever shall confess me before men, him shall the Son of man also confess before the angels of God:

But he that denieth me before men shall be denied before the angels of God.

Likewise, I say unto you, there is joy in the presence of the angels of God over one sinner that repenteth.

And he saith unto him, Verily, verily, I say unto you, Hereafter ye shall see heaven open, and the angels of God ascending and descending upon the Son of man.

And again, when he bringeth in the firstbegotten into the world, he saith, And let all the angels of God worship him.