Mark 13:23

But be on your guard; I have told you everything in advance.

2 Peter 3:17

Therefore, [let me warn you] beloved, knowing these things beforehand, be on your guard so that you are not carried away by the error of unprincipled men [who distort doctrine] and fall from your own steadfastness [of mind, knowledge, truth, and faith],

Mark 13:5

Jesus began to say to them, “Be careful and see to it that no one misleads you.

John 14:29

I have told you now before it happens, so that when it does take place, you may believe and have faith [in Me].

Isaiah 44:7-8

‘Who is like Me? Let him proclaim it and declare it;
Yes, let him confront Me,
Since I established the people of antiquity.
And let them [those supposed gods] tell those people [who foolishly follow them] the things to come
And the events that are going to take place.

Matthew 7:15

“Beware of the false prophets, [teachers] who come to you dressed as sheep [appearing gentle and innocent], but inwardly are ravenous wolves.

Mark 13:9

“But be on your guard; they will turn you over to courts, and you will be beaten in synagogues, and you will stand [as accused] before governors and kings for My sake, as a testimony to them.

Mark 13:33

“Be on guard and stay constantly alert [and pray]; for you do not know when the appointed time will come.

Luke 21:8

He said, “Be careful and see to it that you are not misled; for many will come in My name [appropriating for themselves the name Messiah which belongs to Me alone], saying, ‘I am He,’ and, ‘The time is near!’ Do not follow them.

Luke 21:34

“But be on guard, so that your hearts are not weighed down and depressed with the giddiness of debauchery and the nausea of self-indulgence and the worldly worries of life, and then that day [when the Messiah returns] will not come on you suddenly like a trap;

John 16:1-4

“I have told you these things so that you will not stumble or be caught off guard and fall away.

Treasury of Scripture Knowledge

Summary

Mark 13:23

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

Behold

Isaiah 44:7

John 14:29

John 16:1

General references

Mark 13:33

Luke 17:23

Bible References

Behold

I have told you now before it happens, so that when it does take place, you may believe and have faith [in Me].

“I have told you these things so that you will not stumble or be caught off guard and fall away.

General references

“Be on guard and stay constantly alert [and pray]; for you do not know when the appointed time will come.

They will say to you, ‘Look [the Messiah is] there!’ or ‘Look [He is] here!’ Do not go away [to see Him], and do not run after them.