Luke 21:8

And he said, Take heed that ye be not led astray: for many shall come in my name, saying, I am he ; and, The time is at hand: go ye not after them.

Jeremiah 29:8

For thus saith Jehovah of hosts, the God of Israel: Let not your prophets that are in the midst of you, and your diviners, deceive you; neither hearken ye to your dreams which ye cause to be dreamed.

Matthew 3:2

Repent ye; for the kingdom of heaven is at hand.

Matthew 4:17

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

Ephesians 5:6

Let no man deceive you with empty words: for because of these things cometh the wrath of God upon the sons of disobedience.

2 Thessalonians 2:3

let no man beguile you in any wise: for it will not be, except the falling away come first, and the man of sin be revealed, the son of perdition,

Matthew 24:4-5

And Jesus answered and said unto them, Take heed that no man lead you astray.

Matthew 24:11

And many false prophets shall arise, and shall lead many astray.

Matthew 24:23-25

Then if any man shall say unto you, Lo, here is the Christ, or, Here; believe it not.

Mark 13:5-6

And Jesus began to say unto them, Take heed that no man lead you astray.

Mark 13:21-23

And then if any man shall say unto you, Lo, here is the Christ; or, Lo, there; believe it not:

Luke 17:23

And they shall say to you, Lo, there! Lo, here! go not away, nor follow after them :

John 5:43

I am 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

I said therefore unto you, that ye shall die in your sins: for except ye believe that I am he , ye shall die in your sins.

Acts 5:36-37

For before these days rose up Theudas, giving himself out 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 dispersed, and came to nought.

Acts 8:9-10

But there was a certain man, Simon by name, who beforetime in the city used sorcery, and amazed the people of Samaria, giving out that himself was some great one:

2 Corinthians 11:13-15

For such men are false apostles, deceitful workers, fashioning themselves into apostles of Christ.

2 Thessalonians 2:9-11

even he , whose coming is according to the working of Satan with all power and signs and lying wonders,

2 Timothy 3:13

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

1 John 4:1

Beloved, believe not every spirit, but prove 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 gone forth into the world, even they that confess not that Jesus Christ cometh in the flesh. This is the deceiver and the antichrist.

Revelation 1:3

Blessed is he that readeth, and they that hear the words of the prophecy, and keep the things that are written therein: for the time is at hand.

Revelation 12:9

And the great dragon was cast down, the old serpent, he that is called the Devil and Satan, the deceiver of the whole world; he was cast down to the earth, and his angels were cast down 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 am 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, giving himself out 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 dispersed, and came to nought.
Acts 8:9
But there was a certain man, Simon by name, who beforetime in the city used sorcery, and amazed the people of Samaria, giving out that himself was some great one:

And the time

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

General references

Matthew 24:23
Then if any man shall say unto you, Lo, here is the Christ, or, Here; believe it not.
Mark 13:21
And then if any man shall say unto you, Lo, here is the Christ; or, Lo, there; believe it not:
Luke 17:23
And they shall say to you, Lo, there! Lo, here! go not away, nor follow after them :

American Standard Version Public Domain