End of the age

End of the age, end of days, last days, or conclusion of the system of things is the final period of the present system, which then transfers to the Kingdom of God upon the Son of Man's arrival.

As Jesus was sitting on the Mount of Olives, the disciples came to him privately. “Tell us,” they said, “when will this happen, and what will be the sign of your coming and of the end of the age*?”

Pangs of distress
Islamic State – United States of America Conflict
 * Fanatical Islamic twitter posting: "How are you (Americans) going to live when we create our lone wolves to be nuclear bombs... by God, you can't match us and in the heart of your homes you will see," - IS claims responsibility for Texas cartoon attack

Great tribulation
For just as the days of Noah were, so the presence of the Son of man will be. For as they were in those days before the Flood, eating and drinking, men marrying and women being given in marriage, until the day that Noah entered into the ark, and they took no note until the Flood came and swept them all away, so the presence of the Son of man will be. (Matthew 24:37-39)

Sign of the Son of Man
[30] Then the sign of the Son of man will appear in heaven, and all the tribes of the earth will beat themselves in grief, and they will see the Son of man coming on the clouds of heaven with power and great glory. [31] And he will send out his angels with a great trumpet sound, and they will gather his chosen ones together from the four winds, from one extremity of the heavens to their other extremity. [32] “Now learn this illustration from the fig tree: Just as soon as its young branch grows tender and sprouts its leaves, you know that summer is near. [33] Likewise also you, when you see all these things, know that he is near at the doors. [34] Truly I say to you that this generation will by no means pass away until all these things happen. [35] Heaven and earth will pass away, but my words will by no means pass away. [36] “Concerning that day and hour nobody knows, neither the angels of the heavens nor the Son, but only the Father. [37] For just as the days of Noah were, so the presence of the Son of man will be. [38] For as they were in those days before the Flood, eating and drinking, men marrying and women being given in marriage, until the day that Noah entered into the ark, [39] and they took no note until the Flood came and swept them all away, so the presence of the Son of man will be. [40] Then two men will be in the field; one will be taken along and the other abandoned. [41] Two women will be grinding at the hand mill; one will be taken along and the other abandoned. [42] Keep on the watch, therefore, because you do not know on what day your Lord is coming. [43] “But know one thing: If the householder had known in what watch the thief was coming, he would have kept awake and not allowed his house to be broken into. [44] On this account, you too prove yourselves ready, because the Son of man is coming at an hour that you do not think to be it. (Matthew 24:30-44)