Luke 21:8

Then he said, Take heed that ye not be deceived, for many shall come in my name, saying, I am; and the time draws near; therefore, go ye not after them.

Jeremiah 29:8

For thus hath the LORD of the hosts the God of Israel said: Let not your prophets and your diviners that are in the midst of you, deceive you, neither hearken to your dreams which ye dream.

Matthew 3:2

and saying, Repent ye, for the kingdom of heaven is at hand.

Matthew 4:17

From that time Jesus began to preach and to say, Repent, for the kingdom of the heavens is at hand.

Ephesians 5:6

Let no one deceive you with vain words, for because of these things the wrath of God comes upon the sons of disobedience.

2 Thessalonians 2:3

Let no one deceive you by any means: for that day shall not come except there come a falling away first and that man of sin be revealed, the son of perdition,

Matthew 24:4-5

And Jesus answered and said unto them, Take heed that no one deceive you.

Matthew 24:11

And many false prophets shall rise and shall deceive many.

Matthew 24:23-25

Then if any man shall say unto you, Behold, here is the Christ, or there, believe it not.

Mark 13:5-6

And Jesus, answering them, began to say, Take heed that no one deceive you,

Mark 13:21-23

And then if anyone should say to you, Behold, here is the Christ, or, Behold, he is there, do not believe him;

Luke 17:23

And they shall say to you, Behold it here, or, Behold it there; do not go, nor follow them.

John 5:43

I have come in my Father's name, and ye receive me not; if another shall come in his own name, him ye will receive.

John 8:24

Therefore I said unto you that ye shall die in your sins, for if ye do not believe that I AM, ye shall die in your sins.

Acts 5:36-37

For before these days, rose up Theudas, boasting himself to be somebody; to whom a number of men, about four hundred, joined themselves; who was slain; and all, as many as obeyed him, were scattered and brought to nought.

Acts 8:9-10

But there was a certain man called Simon, who before this in the same city used magic arts and amazed the people of Samaria, giving out that he himself was some great one,

2 Corinthians 11:13-15

For these false apostles are deceitful workers, transforming themselves into apostles of Christ.

2 Thessalonians 2:9-11

that wicked one, who shall come by the working of Satan with great power and signs and lying miracles,

2 Timothy 3:13

But evil men and seducers shall wax worse and worse, deceiving and being deceived.

1 John 4:1

Beloved, do not believe every spirit, but try the spirits whether they are of God because many false prophets are gone out into the world.

2 John 1:7

For many deceivers are entered into the world, who do not confess Jesus Christ coming in flesh. This same is a deceiver and antichrist.

Revelation 1:3

Blessed is he that reads and those that hear the words of this prophecy and keep those things which are written therein, for the time is at hand.

Revelation 12:9

And the great dragon was cast out, the serpent of old, who is called Devil and the Satan, who deceives the whole world; he was cast out into the earth, and his angels were cast out with him.

Treasury of Scripture Knowledge

Summary

And he said, Take heed that ye be not deceived: for many shall come in my name, saying, I am Christ; and the time draweth near: go ye not therefore after them.

General references

Bible References

For

John 5:43
I have come in my Father's name, and ye receive me not; if another shall come in his own name, him ye will receive.
Acts 5:36
For before these days, rose up Theudas, boasting himself to be somebody; to whom a number of men, about four hundred, joined themselves; who was slain; and all, as many as obeyed him, were scattered and brought to nought.
Acts 8:9
But there was a certain man called Simon, who before this in the same city used magic arts and amazed the people of Samaria, giving out that he himself was some great one,

And the time

Matthew 3:2
and saying, Repent ye, for the kingdom of heaven is at hand.
Matthew 4:17
From that time Jesus began to preach and to say, Repent, for the kingdom of the heavens is at hand.
Revelation 1:3
Blessed is he that reads and those that hear the words of this prophecy and keep those things which are written therein, for the time is at hand.

General references

Matthew 24:23
Then if any man shall say unto you, Behold, here is the Christ, or there, believe it not.
Mark 13:21
And then if anyone should say to you, Behold, here is the Christ, or, Behold, he is there, do not believe him;
Luke 17:23
And they shall say to you, Behold it here, or, Behold it there; do not go, nor follow them.