Hebrews 2:1

We must therefore pay closer attention to what we have heard, in case we drift away.

Hebrews 3:12

Brothers, take care in case there is a wicked, unbelieving heart in any of you, moving you to apostatize from the living God.

Luke 21:8

He said, "Take care that you are not misled; for many will come in my name saying, 'I am he' and 'the time is near' ??do not go after them.

Luke 21:34

Take heed to yourselves in case your hearts get overpowered by dissipation and drunkenness and worldly anxieties, and so that Day catches you suddenly like a trap.

Luke 21:36

From hour to hour keep awake, praying that you may succeed in escaping all these dangers to come and in standing before the Son of man."

Hebrews 4:1

Well then, as the promise of entrance into his Rest is still left to us, let us be afraid of anyone being judged to have missed it.

Hebrews 12:15

see to it that no one misses the grace of God, that no root of bitterness grows up to be a trouble by contaminating all the rest of you;

James 1:26

Whoever considers he is religious, and does not bridle his tongue, but deceives his own heart, his religion is futile.

1 John 5:21

My dear children, keep clear of idols.

Revelation 12:9

So the huge dragon was thrown down ??that old serpent called the Devil and Satan, the seducer of the whole world ??thrown down to the earth, and his angels thrown down along with him.

Revelation 13:14

and by dint of the miracles he is allowed to perform in presence of the Beast, he seduces the dwellers on earth; he bids the dwellers on earth erect a statue to the Beast who lived after being wounded by the sword,

Revelation 20:4

And I saw thrones with people sitting on them, who were allowed to judge ??saw the souls of those who had been beheaded for the testimony of Jesus and God's word, those who would not worship the Beast or his statue, and who would not receive his mark on their forehead or hand; they came to life and reigned along with the Christ for a thousand years.

Treasury of Scripture Knowledge

Summary

Take heed to yourselves, that your heart be not deceived, and ye turn aside, and serve other gods, and worship them;

Bible References

Take heed

Luke 21:8
He said, "Take care that you are not misled; for many will come in my name saying, 'I am he' and 'the time is near' ??do not go after them.
Hebrews 2:1
We must therefore pay closer attention to what we have heard, in case we drift away.
Hebrews 3:12
Brothers, take care in case there is a wicked, unbelieving heart in any of you, moving you to apostatize from the living God.
Hebrews 4:1
Well then, as the promise of entrance into his Rest is still left to us, let us be afraid of anyone being judged to have missed it.
Hebrews 12:15
see to it that no one misses the grace of God, that no root of bitterness grows up to be a trouble by contaminating all the rest of you;

Your heart

James 1:26
Whoever considers he is religious, and does not bridle his tongue, but deceives his own heart, his religion is futile.
1 John 5:21
My dear children, keep clear of idols.
Revelation 12:9
So the huge dragon was thrown down ??that old serpent called the Devil and Satan, the seducer of the whole world ??thrown down to the earth, and his angels thrown down along with him.
Revelation 13:14
and by dint of the miracles he is allowed to perform in presence of the Beast, he seduces the dwellers on earth; he bids the dwellers on earth erect a statue to the Beast who lived after being wounded by the sword,
Revelation 20:4
And I saw thrones with people sitting on them, who were allowed to judge ??saw the souls of those who had been beheaded for the testimony of Jesus and God's word, those who would not worship the Beast or his statue, and who would not receive his mark on their forehead or hand; they came to life and reigned along with the Christ for a thousand years.