An angel came down from heaven - One of the executors of the Divine justice, who receives criminals, and keeps them in prison, and delivers them up only to be tried and executed.

The key of the prison and the chain show who he is; and as the chain was great, it shows that the culprit was impeached of no ordinary crimes.

I saw.

Revelation 10:1 And I saw another mighty angel come down from heaven, clothed with a cloud: and a rainbow was on his head...

Revelation 18:1 And after these things I saw another angel come down from heaven, having great power; and the earth was lightened with his glory.

having.

Revelation 1:18 I am he that lives, and was dead; and, behold, I am alive for ever more, Amen; and have the keys of hell and of death.

Revelation 9:1,2 And the fifth angel sounded, and I saw a star fall from heaven to the earth: and to him was given the key of the bottomless pit...

Luke 8:31 And they sought him that he would not command them to go out into the deep.

a great.

2 Peter 2:4 For if God spared not the angels that sinned, but cast them down to hell, and delivered them into chains of darkness...

Jude 1:6 And the angels which kept not their first estate, but left their own habitation...

An Awful Contrast
"Then did they spit in his face."--Matthew 26:67. "And I saw a great white throne, and him that sat on it, from whose face the earth and the heaven fled away."--Revelation 20:11. GUIDED BY OUR TEXT in Matthew's Gospel, let us first go in thought to the palace of Caiaphas the high priest, and there let us, in deepest sorrow, realize the meaning of these terrible words: "Then did they spit in his face." There is more of deep and awful thunder in them than in the bolt that bursts overhead, there is …
Charles Haddon Spurgeon—Spurgeon's Sermons Volume 42: 1896

Jesus Heals Two Gergesene Demoniacs.
(Gergesa, Now Called Khersa.) ^A Matt. VIII. 28-34; IX. 1; ^B Mark V. 1-21; ^C Luke VIII. 26-40. ^b 1 And they came to the other side of the sea [They left in the "even," an elastic expression. If they left in the middle of the afternoon and were driven forward by the storm, they would have reached the far shore several hours before dark], ^c 26 And they arrived at the country of the Gerasenes, which is over against Galilee. ^a 28 And when he was come into the country of the Gadarenes. ^c 27 And …
J. W. McGarvey—The Four-Fold Gospel

The General Resurrection
Behold, I show you a mystery. We shall not all sleep, but we shall all be changed; in a moment, in the twinkling of an eye, at the last trump, for the trumpet shall sound, and the dead shall be raised incorruptible, and we shall be changed. For this corruptible must put on incorruption, and this mortal must put on immortality. A n object, great in itself, and which we know to be so, will appear small to us, if we view it from a distance. The stars, for example, in our view, are but as little specks …
John Newton—Messiah Vol. 2