Deuteronomy 11:16

Watch ye to yourselves, lest your heart shall be enticed, and ye turn aside and serve other gods, and worship to them:

Job 31:27

And my heart will be seduced in secret, and my hand shall kiss to my mouth:

Deuteronomy 8:19

And it was, if forgetting, thou shalt forget Jehovah thy God, and thou wentest after other gods, and served them and worshipped to them, I testified against you this day, that perishing, ye shall perish.

Deuteronomy 29:18

Lest there be among you man or woman, or family or tribe, whom his heart turn this day from Jehovah our God, to go to serve the gods of these nations; lest there be among you a root bearing poverty and wormwood;

Hebrews 2:1

For this ought we to hold above measure to the things heard, lest we slip away.

Hebrews 3:12

See, brethren, lest there shall be in any of you an evil heart of unbelief, in removing away from the living God.

Deuteronomy 4:9

Only watch to thyself and watch thy soul greatly, lest thou. shalt forget the words which thine eyes saw, and lest they shall remove from thy heart all the days of thy life: and make them known to thy sons and to the sons of thy sons.

Deuteronomy 4:23

Watch for yourselves lest ye shall forget the covenant of Jehovah your God which he cut out with you, and ye make to you any carved thing, the appearance of any thing which Jehovah thy God commanded thee.

Deuteronomy 13:3

Thou shalt not hear to the words of that prophet or to that dreamer of dreams: for Jehovah thy God tries you to know whether ye are loving Jehovah your God with all your heart and with all your soul.

Deuteronomy 30:17

And if thy heart shall turn aside and thou shalt not hear, and be thrust away and worship to other gods, and serve them;

Isaiah 44:20

He fed upon ashes: a deceived heart turned him away, and he shall not deliver his soul, and he shall not say, Is there not a lie in my right hand?

Luke 21:8

And he said, See ye, be not deceived: for many shall come in my name,. saying, That I am; and the time has drawn near: therefore go not after them.

Luke 21:34

And attend to yourselves, lest at any time your hearts be loaded with dizziness, caused by excess, and drunkenness, and cares of life, and that day come upon you unexpectedly.

Luke 21:36

Watch therefore, in all time praying, that ye be deemed worthy to escape all these about to be, and to stand before the Son of man.

Hebrews 4:1

Let us therefore fear, lest a solemn promise being left to come into his rest, any of you should seem to have failed.

Hebrews 12:15

Observing narrowly lest any be failing of the grace of God: lest any root of bitterness springing forth aloft give trouble, and by this many be defiled;

James 1:26

If any among you seem to be religious, bridling not his tongue, but deceiving his heart, the religion of this one vain.

1 John 5:21

Little children, watch yourselves from idols. Amen.

Revelation 12:9

And the great dragon was cast out, the old serpent, called the Devil, and Satan, he deceiving the whole habitable globe: he was cast into the earth, and his angels were cast out with him.

Revelation 13:14

And he deceives them dwelling upon earth by the signs which were given him to do before the wild beast; saying to them dwelling upon earth, to make an image to the wild beast, who has the blow of the sword, and he lived.

Revelation 20:4

And I saw thrones, and they sat upon them, and judgment was given them: and the souls of them beheaded with an axe for the testimony of Jesus, and for the word of God, and who worshipped not the wild beast, nor his image, and took not the stamp upon their foreheads, and upon their hands; and they lived and reigned with Christ 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

Deuteronomy 4:9
Only watch to thyself and watch thy soul greatly, lest thou. shalt forget the words which thine eyes saw, and lest they shall remove from thy heart all the days of thy life: and make them known to thy sons and to the sons of thy sons.
Luke 21:8
And he said, See ye, be not deceived: for many shall come in my name,. saying, That I am; and the time has drawn near: therefore go not after them.
Hebrews 2:1
For this ought we to hold above measure to the things heard, lest we slip away.
Hebrews 3:12
See, brethren, lest there shall be in any of you an evil heart of unbelief, in removing away from the living God.
Hebrews 4:1
Let us therefore fear, lest a solemn promise being left to come into his rest, any of you should seem to have failed.
Hebrews 12:15
Observing narrowly lest any be failing of the grace of God: lest any root of bitterness springing forth aloft give trouble, and by this many be defiled;

Your heart

Deuteronomy 13:3
Thou shalt not hear to the words of that prophet or to that dreamer of dreams: for Jehovah thy God tries you to know whether ye are loving Jehovah your God with all your heart and with all your soul.
Deuteronomy 29:18
Lest there be among you man or woman, or family or tribe, whom his heart turn this day from Jehovah our God, to go to serve the gods of these nations; lest there be among you a root bearing poverty and wormwood;
Job 31:27
And my heart will be seduced in secret, and my hand shall kiss to my mouth:
Isaiah 44:20
He fed upon ashes: a deceived heart turned him away, and he shall not deliver his soul, and he shall not say, Is there not a lie in my right hand?
James 1:26
If any among you seem to be religious, bridling not his tongue, but deceiving his heart, the religion of this one vain.
1 John 5:21
Little children, watch yourselves from idols. Amen.
Revelation 12:9
And the great dragon was cast out, the old serpent, called the Devil, and Satan, he deceiving the whole habitable globe: he was cast into the earth, and his angels were cast out with him.
Revelation 13:14
And he deceives them dwelling upon earth by the signs which were given him to do before the wild beast; saying to them dwelling upon earth, to make an image to the wild beast, who has the blow of the sword, and he lived.
Revelation 20:4
And I saw thrones, and they sat upon them, and judgment was given them: and the souls of them beheaded with an axe for the testimony of Jesus, and for the word of God, and who worshipped not the wild beast, nor his image, and took not the stamp upon their foreheads, and upon their hands; and they lived and reigned with Christ a thousand years.

And serve

Deuteronomy 8:19
And it was, if forgetting, thou shalt forget Jehovah thy God, and thou wentest after other gods, and served them and worshipped to them, I testified against you this day, that perishing, ye shall perish.
Deuteronomy 30:17
And if thy heart shall turn aside and thou shalt not hear, and be thrust away and worship to other gods, and serve them;