Matthew 24:15-16

"So when you see standing in the holy place 'the abomination of desolation,' spoken of by the prophet Daniel (let the reader understand)

Matthew 24:32-34

"Now learn this lesson from the fig tree: as soon as its branch becomes tender and puts forth its leaves, you know that summer is near.

Mark 13:14-16

"When you see 'the abomination of desolation' standing where it ought not to be (let the reader understand), then let those who are in Judea flee to the mountains.

Luke 21:20-21

"But when you see Jerusalem surrounded by armies, then know that its desolation is near.

Luke 21:29-33

He told them a parable: "Look at the fig tree, and all the trees.

Treasury of Scripture Knowledge

Summary

And this shall be a sign unto you, saith the LORD, that I will punish you in this place, that ye may know that my words shall surely stand against you for evil:

Bible References

A sign

Matthew 24:15
"So when you see standing in the holy place 'the abomination of desolation,' spoken of by the prophet Daniel (let the reader understand)
Mark 13:14
"When you see 'the abomination of desolation' standing where it ought not to be (let the reader understand), then let those who are in Judea flee to the mountains.
Luke 21:20
"But when you see Jerusalem surrounded by armies, then know that its desolation is near.