Angels are mentioned many times in the Holy Books of Matthew, Mark, Luke and John,  who relate the gospel of Jesus of Nazareth.  The following are a few pertinent Biblical entries.

Then Joseph her husband, being a just man, and not willing to make her a public example, was minded to put her away privily.

But while he thought on these things, behold, the ANGEL of the LORD appeared unto him in a dream, saying, Joseph, thou son of David, fear not to take unto thee Mary thy wife: for that which is conceived in her is of the Holy Ghost.

Now all this was done, that it might be fulfilled which was spoken of the Lord by the prophet, saying, Behold, a virgin shall be with child, and shall bring forth a son, and they shall call his name Emmanuel, which being interpreted is, God with us.

Then Joseph being raised from sleep did as the ANGEL of the Lord had bidden him, and took unto him his wife:

And knew her not till she had brought forth her firstborn son: and he called his name JESUS."

"When they saw the star, they rejoiced with exceeding great joy.

And when they were come into the house, they saw the young child with Mary his mother, and fell down, and worshipped him: and when they had opened their treasures, they presented unto him gifts; gold, and frankincense and myrrh.

And being warned of God in a dream that they should not return to Herod, they departed into their own country another way.

And when they were departed, behold, the ANGEL of the Lord appeareth to Joseph in a dream, saying, Arise, and take the young child and his mother, and flee into Egypt, and be thou there until I bring thee word: for Herod will seek the young child to destroy him......"

Saying, Arise, and take the young child and his mother, and go into the land of Israel: for they are dead which sought the young child's life.

And he arose, and took the young child and his mother, and came into the land of Israel."

But he answered and said, It is written, Man shall not live by bread alone, but by every word that proceedeth out of the mouth of God.

Then the devil taketh him up into the holy city, and setteth him on a pinnacle of the temple, And saith unto him, If thou be the Son of God, cast thyself down: for it is written, He shall give his ANGELS charge concerning thee: and in their hands they shall bear thee up, lest at any time thou dash thy foot against a stone.

Again, the devil taketh him up into an exceeding high mountain, and sheweth him all the kingdoms of the world,  and the glory of them;  And saith unto him, All these things will I give thee, if thou wilt fall down and worship me.

Then saith Jesus unto him, Get thee hence, Satan: for it is written, Thou shalt worship the Lord thy God, and him only shalt thou serve.

Then the devil leaveth him, and, behold, ANGELS came and ministered unto him."

The field is the world; the good seed are the children of the kingdom; but the tares are the children of the wicked one;  The enemy that sowed them is the devil; the harvest is the end of the world; and the reapers are the ANGELS.

As therefore the tares are gathered and burned in the fire; so shall it be in the end of this world.

The Son of man shall send forth his ANGELS, and they shall gather out of his kingdom all things that offend, and them which do iniquity; And shall cast them into a furnace of fire: there shall be wailing and gnashing of teeth.

Then shall the righteous shine forth as the sun in the kingdom of their Father. Who hath ears to hear, let him hear."

Now there were with us seven brethren: and the first, when he had married a wife, deceased, and, having no issue, left his wife unto his brother:

Likewise the second also, and the third, unto the seventh.  And last of all the woman died also.

Therefore in the resurrection whose wife shall she be of the seven?  For they all had her.

Jesus answered and said unto them, Ye do err, not knowing the scriptures, nor the power of God.

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

And he shall send his ANGELS with a great sound of a trumpet, and they shall gather together his elect from the four winds, from one end of heaven to the other."

And, behold, there was a great earthquake: for the ANGEL of the Lord descended from heaven, and came and rolled back the stone from the door, and sat upon it.

And for fear of him the keepers did shake, and became as dead men.

He is not here: for he is risen, as he said. Come, see the place where the Lord lay.

And go quickly, and tell his disciples that he is risen from the dead; and, behold, he goeth before you into Galilee;  there shall ye see him: lo, I have told you."

And immediately the spirit driveth him into the wilderness.

And he was there in the wilderness forty days, tempted of Satan; and was with the wild beasts; and the ANGELS ministered unto him."

Or what shall a man give in exchange for his soul?

Whosoever therefore shall be ashamed of me and of my words in this adulterous and sinful generation; of him also shall the Son of man be ashamed, when he cometh in the glory of his Father with the holy ANGELS."

But in those days, after that tribulation, the sun shall be darkened, and the moon shall not give her light,

And then shall they see the Son of man coming in the clouds with great power and glory.

And then shall he send his ANGELS, and shall gather together his elect from the four winds, from the uttermost part of the earth to the uttermost part of heaven.

Now learn a parable of the fig tree; When her branch is yet tender, and putteth forth leaves, ye know that summer is near:

So ye in like manner, when ye shall see these things come to pass, know that it is nigh, even at the doors.

Verily I say unto you, that this generation shall not pass, till all these things be done.

Heaven and earth shall pass away: but my words shall not pass away.

But of that day and that hour knoweth no man, no, not the ANGELS which are in heaven, neither the Son, but the Father.

Take ye heed, watch and pray: for ye know not when the time is."

And the whole multitude of the people were praying without at the time of incense.

And there appeared unto him an ANGEL of the Lord standing on the right side of the altar of incense.

And when Zacharias saw him, he was troubled, and fear fell upon him.

But the ANGEL said unto him, Fear not, Zacharias: for thy prayer is heard; and thy wife Elisabeth shall bear thee a son, and thou shalt call his name John."

"And in the sixth month the ANGEL Gabriel was sent from God unto a city of Galilee, named Nazareth,

To a virgin espoused to a man whose name was Joseph, of the house of David; and the virgin's name was Mary.

And when she saw him, she was troubled at his saying, and cast in her mind what manner of salutation this should be.

And the ANGEL said unto her, Fear not, Mary: for thou hast found favour with God.

And, behold, thou shalt conceive in thy womb, and bring forth a son, and shalt call his name JESUS."

And, lo, the ANGEL of the Lord came upon them, and the glory of the Lord shone round about them: and they were sore afraid.

For unto you is born this day in the city of David a Saviour, which is Christ the Lord."

"And this shall be a sign unto you; Ye shall find the babe wrapped in swaddling clothes, lying in a manger.

And suddenly there was with the ANGEL a multitude of the heavenly host praising God, and saying,

Glory to God in the highest, and on earth peace, good will toward men. ......"

"And the shepherds returned, glorifying and praising God for all the things that they had heard and seen, as it was told unto them.

And when eight days were accomplished for the circumcising of the child, his name was called JESUS, which was so named of the ANGEL before he was conceived in the womb."

But I tell you of a truth, there be some standing here, which shall not taste of death, till they see the kingdom of God."

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

But they which shall be accounted worthy to obtain that world, and the resurrection from the dead, neither marry, nor are given in marriage:

Neither can they die any more: for they are equal unto the ANGELS; and are the children of God, being the children of the resurrection.

Now that the dead are raised, even Moses shewed at the bush, when he calleth the Lord, the 
God of Abraham, and the God of Isaac, and the God of Jacob.

For he is not a God of the dead, but of the living: for all live unto him."

And when he was at the place, he said unto them, Pray that ye enter not into temptation.

And he was withdrawn from them about a stone's cast, and kneeled down, and prayed,

Saying, Father, if thou be willing, remove this cup from me: nevertheless not my will, but thine, be done.

And there appeared an ANGEL unto him from heaven, strengthening him.

And being in an agony he prayed more earnestly: and his sweat was as it were great drops of blood falling down to the ground.

And when he rose up from prayer, and was come to his disciples, he found them sleeping for sorrow,

And said unto them, Why sleep ye? rise and pray, lest ye enter into temptation.

Now there is at Jerusalem by the sheep market a pool, which is called in the Hebrew tongue Bethesda, having five porches.

In these lay a great multitude of impotent folk, of blind, halt, withered, waiting for the moving of the water.

The people therefore, that stood by, and heard it, said that it thundered: others said, An ANGEL spake to him.

Jesus answered and said, This voice came not because of me, but for your sakes.

Now is the judgment of this world: now shall the prince of this world be cast out.

And I, if I be lifted up from the earth, will draw all men unto me."

And they say unto her, Woman, why weepest thou? She saith unto them, Because they have taken away my LORD, and I know not where they have laid him."