Let's take a look at the Holy Spirit Gabriel and see what he did when came around Daniel. Let's go to Daniel 9: 20 And whiles I was speaking, and praying, and confessing my sin and the sin of my people Israel, and presenting my supplication before the LORD my God for the holy mountain of my God; 21 yea, whiles I was speaking in prayer, even the man Gabriel, whom I had seen in the vision at the beginning, being caused to fly swiftly, touched me about the time of the evening oblation. 22 And he informed me, and talked with me, and said, O Daniel, I am now come forth to give thee skill and understanding.
So we see that Gabriel the holy angel, and we see that he fly swiftly, so we know this is not a regular man, but he came to Daniel and he talk with him and blessed him with skill and understanding. So let's go further in the New Testament and see what Gabriel did when he came around another person.
Let's go to Luke 1: 26 And in the sixth month the angel Gabriel was sent from God unto a city of Galilee, named Nazareth, 27 to a virgin espoused to a man whose name was Joseph, of the house of David; and the virgin's name was Mary. 28 And the angel came in unto her, and said, Hail, thou that art highly favoured, the Lord is with thee: blessed art thou among women. 29 And when she saw him, she was troubled at his saying, and cast in her mind what manner of salutation this should be. 30 And the angel said unto her, Fear not, Mary: for thou hast found favour with God. 31 And, behold, thou shalt conceive in thy womb, and bring forth a son, and shalt call his name JESUS.
Again we see Gabriel bringing forth a message, and these messages pertain to the word of God. But let's go to one last place in Acts 10: 1 There was a certain man in Cæsarea called Cornelius, a centurion of the band called the Italian band, 2 a devout man, and one that feared God with all his house, which gave much alms to the people, and prayed to God alway. 3 He saw in a vision evidently about the ninth hour of the day an angel of God coming in to him, and saying unto him, Cornelius. 4 And when he looked on him, he was afraid, and said, What is it, Lord? And he said unto him, Thy prayers and thine alms are come up for a memorial before God. 5 And now send men to Joppa, and call for one Simon, whose surname is Peter: 6 he lodgeth with one Simon a tanner, whose house is by the sea side: he shall tell thee what thou oughtest to do. 7 And when the angel which spake unto Cornelius was departed, he called two of his household servants, and a devout soldier of them that waited on him continually;
So these are what holy angels do that come from God they come to give messages to the people. Now we have fallen Angels that were kicked out of the third heaven and brought down to Earth. So people may be dealing with fallen angel, or an unholy angel. The book say in Revelation 12: 7 And there was war in heaven: Michael and his angels fought against the dragon; and the dragon fought and his angels, 8 and prevailed not; neither was their place found any more in heaven. 9 And the great dragon was cast out, that old serpent, called the Devil, and Satan, which deceiveth the whole world: he was cast out into the earth, and his angels were cast out with him. 10 And I heard a loud voice saying in heaven, Now is come salvation, and strength, and the kingdom of our God, and the power of his Christ: for the accuser of our brethren is cast down, which accused them before our God day and night. 12 Therefore rejoice, ye heavens, and ye that dwell in them. Woe to the inhabiters of the earth and of the sea! for the devil is come down unto you, having great wrath, because he knoweth that he hath but a short time.