Mark 13:23

So you must be on your guard. I have warned you about it all beforehand.

2 Peter 3:17

So, dearly beloved, since you have been forewarned, you must always be on your guard against being led astray by the errors of lawless men, and so against falling away from your present firmness;

Mark 13:5

Jesus began to say to them: "Look out that no one misleads you about it.

John 14:29

And now I have told you this before it takes place, that when it does take place you may believe in me.

Matthew 7:15

"Look out for false prophets, who come to you under the guise of sheep, but inside they are devouring wolves.

Mark 13:9

So you must be on the lookout for yourselves; they will turn you over to courts, and to synagogues where you will be beaten, and you must appear before governors and kings for my sake, to testify to them.

Mark 13:33

Keep looking, keep alert, for you do not know when the time will be.

Luke 21:8

So He said, "You must take care not to be misled about it! For many will come bearing the name of Messiah, and saying, 'I am He,' and, 'The time is near.' Do not go after them.

Luke 21:34

But ever be on your guard, so that your hearts may not be loaded down with self-indulgence, drunkenness, and worldly worries, and that day, like a trap, catch you unawares.

John 16:1-4

"I have told you these things to keep you from falling over stumbling blocks.

Treasury of Scripture Knowledge

Summary

But take ye heed: behold, I have foretold you all things.

General references

Bible References

Behold

John 14:29
And now I have told you this before it takes place, that when it does take place you may believe in me.
John 16:1
"I have told you these things to keep you from falling over stumbling blocks.

General references

Mark 13:33
Keep looking, keep alert, for you do not know when the time will be.
Luke 17:23
And men will say to you, 'Look! There he is!' or, 'Look! Here He is!' Do not start in pursuit of Him,