Verse 14 marks the end of the paranthetical portion of the vision between the sixth and seventh trumpets (10:1-11:14). It says, "The second woe is past", the three woes are the three series of judgments, the Seal judgments, the Trumpet judgments and the Vial judgments. The second woe is the Trumpet judgment, it is now past. The final series of judgments is about to come, the Vial judgments. "The third woe cometh quickly", this last series of judgments will fall rapidly in swift succession.
Verse 15 says, "And the seventh angel sounded", remember that the sixth Seal contained the whole six Trumpet judgments, now understand also that seventh Trumpet contains the whole seven Vial judgments which are now to be poured out.
In verse 15, we have the anticipation of the kingdom, we have the announcement that the time has finally come for the kingdom of this world to become kingdom of Christ. Remember that the rule of this world was temporarily given to Satan. It was given into his hand to prove that he could not take the place of God and rule this world sussessfully (Eph.2:2 - Luke 4:6 - 2 Cor. 4:4).
I would draw your attention to the fact that each of the three series of judgments has a separate source. In the Seal judgments we see a world ruined by man, the antichrist, who causes the Seal judgments in a vain attempt to turn the world into a utopia without God. In the Trumpet judgments we see a world destroyed by Satan as he makes a desparate last attempt to wrest total control of the earth from God. As we come to the Vial judgments it is Christ himself who pours out the final catastrosphic judgments as He destroys Satan and his followers and comes to take the kingdom.
The verse continues, `The kingdoms of this world are become the kingdoms of our Lord and his Christ`, it is not that there are not many things that will yet happen before Christ actually sits on the throne, but rather He has now moved to begin to take His rightful place. He has risen from His throne and has entered the fray to consumate the battle of the ages. The verse concludes with, and he shall reign for ever and ever, the promises of the ages will be fulfilled, (Daniel 2:44 - 4:3,34 - Isa.9:6,7).
In verses 16-17 we see the acclamation of the King. When the announcement is made all of heaven rejoices. The four and twenty elders, which sat on their seats, (the church) fell on their faces and worshipped God. The great King has now entered into the battle, the victory is certain and it will be soon. Oh, what a glorious future awaits the believer! Believer, get your eyes off the this world and your problems and get them fixed on your Saviour and on heaven. In heaven we will give ourselves to praising and worshipping God, and wonder of wonders He will pour out His love and blessings upon us forever, blessings without number!
In verse 17, we see the reason for their thankfulness, we will rejoice to see our God moving to destroy His enemies and our enemies. A world that has for millenniums dishonoured God and rebelled against Him will now be judged, and God will be honoured, that will bring joy to our hearts. We see also the answer to the prayed of the tribulation martyrs in Revelation 6:10, And they cried with a loud voice, saying , How long, O Lord, holy and true, dost thou not judge and avenge our blood on them that dwell on the earth. That prayer is answered and that answer will apply to all of the evil that the ungodly have heaped on the saints of all the ages.
What a time of rejoicing, the wrongs of all the ages will be made right, sin will be exposed for what it really is, the Mystery of Iniquity will be revealed, all of creation will see and understand forever, that sin only and always brings pain and death and nothing good or pleasing. The world doesn`t understand that today. At this point in the book there is yet much to accomplished by the Lord, but the movement is now underway and the end is now in sight.