Luke 21:31

In the same way also, when you see these things happening [i.e., the above mentioned "signs"], you can know that the kingdom of God [i.e., either its heavenly phase or the destruction of Jerusalem] is near.

Matthew 3:2

"You must repent [i.e., change your hearts and lives], for the kingdom of heaven will soon be here."

Matthew 16:1-4

The Pharisees and Sadducees came [and attempted] to test Jesus [by] asking Him to perform a [supernatural] sign from heaven.

Luke 12:51-57

Do you think that I came to bring [only] peace to the earth? No, I tell you, but division instead.

Hebrews 10:37

[Hab. 2:3-4 LXX says], "For [it will be] only a short time [before] He [i.e., Christ], who is coming, will be here without delay.

James 5:9

Do not complain against one another, brothers, so that you will not [have to] be judged [and condemned for it]. Look, the Judge [i.e., Christ] is standing at the door! [See verse 8].

1 Peter 4:7

But the end of everything [as far as your lives are concerned] is near, so be sensible, and sober [so as to be] prayerful.

Treasury of Scripture Knowledge

Summary

So likewise ye, when ye see these things come to pass, know ye that the kingdom of God is nigh at hand.

General references

Bible References

When

Luke 12:51
Do you think that I came to bring [only] peace to the earth? No, I tell you, but division instead.
Matthew 16:1
The Pharisees and Sadducees came [and attempted] to test Jesus [by] asking Him to perform a [supernatural] sign from heaven.

The kingdom

Hebrews 10:37
[Hab. 2:3-4 LXX says], "For [it will be] only a short time [before] He [i.e., Christ], who is coming, will be here without delay.
James 5:9
Do not complain against one another, brothers, so that you will not [have to] be judged [and condemned for it]. Look, the Judge [i.e., Christ] is standing at the door! [See verse 8].
1 Peter 4:7
But the end of everything [as far as your lives are concerned] is near, so be sensible, and sober [so as to be] prayerful.

General references

Mark 13:28
"Now learn this parable from the fig tree. When its tender sprouts appear and its leaves begin to develop, you know that summer is near.