Deuteronomy 11:16

{Take care} so that your heart is not easily deceived, and you turn away, and you serve other gods, and you bow down to them.

Job 31:27

and {I was secretly enticed}, and {my hand threw them a kiss},

Deuteronomy 8:19

And it will happen [that] if you indeed forget Yahweh your God and you go after other gods and you serve them and you bow down before them, I warn you today that you will surely perish.

Deuteronomy 29:18

so that {there is not} among you a man or a woman or a clan or a tribe {whose heart} turns {today} from [being] with Yahweh our God to go to serve the gods of these nations, so that there is not among you a root sprouting poison and wormwood.

Hebrews 2:1

Because of this, [it is] all the more necessary [that] we pay attention to the [things] we have heard, lest we drift away.

Hebrews 3:12

Watch out, brothers, lest there be in some of you an evil, unbelieving heart, [with the result that you] fall away from the living God.

Deuteronomy 4:9

"However, {take care} for yourself and watch your inner self closely, so that you do not forget the things that your eyes have seen, so that they do not slip from your mind all the days of your life; and you shall make them known to your children and to {your grandchildren}.

Deuteronomy 4:23

Watch [out] for yourselves so that you do not forget the covenant of Yahweh your God that he had {made} with you and make for yourselves a divine image [of] the form of anything that Yahweh your God {has forbidden},

Deuteronomy 13:3

you must not listen to the words of that prophet or to that dreamer, for Yahweh your God {is testing you to know whether you love} Yahweh your God with all of your heart and with all [of] your inner self.

Deuteronomy 30:17

However, if your heart turns aside and you [do] not listen and you are lured away and you bow down to other gods and you serve them,

Isaiah 44:20

[He] feeds [on] ashes; a {deceived mind} misleads him. And he cannot save {himself}, and he cannot say, "Is [this] not an illusion in my right hand?"

Luke 21:8

And he said, Watch out that you are not deceived! For many will come in my name, saying, 'I am [he],' and 'The time is near!' Do not go after them!

Luke 21:34

"But take care for yourselves, lest your hearts are weighed down with dissipation and drunkenness and the worries of daily life, and that day come upon you suddenly

Luke 21:36

But be alert at all times, praying that you may have strength to escape all these [things] [that] are going to happen, and to stand before the Son of Man."

Hebrews 4:1

Therefore let us fear, [while there] remains a promise of entering into his rest, that none of you appear to fall short of [it].

Hebrews 12:15

Take care [that] no one falls short of the grace of God; [that] no one growing up [like] a root of bitterness causes trouble, and by it many become defiled;

James 1:26

If anyone thinks he is religious, [although he] does not bridle his tongue but deceives his heart, this person's religion [is] worthless.

1 John 5:21

Little children, guard yourselves from idols.

Revelation 12:9

And the great dragon was thrown down, the ancient serpent, who is called the devil and Satan, who deceives the whole world. He was thrown down to the earth, and his angels were thrown down with him.

Revelation 13:14

And he deceives those who live on the earth because of the signs that it has been granted to him to perform on behalf of the beast, telling those who live on the earth to make an image to the beast who has the wound of the sword and [yet] lived.

Revelation 20:4

And I saw thrones, and they sat down on them, and authority to judge was granted to them. And [I saw] the souls of those who had been beheaded because of the testimony about Jesus and because of the word of God, and who had not worshiped the beast or his image, and did not receive the mark on their forehead and on their hand, and they came to life and reigned with 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

Deuteronomy 4:9
"However, {take care} for yourself and watch your inner self closely, so that you do not forget the things that your eyes have seen, so that they do not slip from your mind all the days of your life; and you shall make them known to your children and to {your grandchildren}.
Luke 21:8
And he said, Watch out that you are not deceived! For many will come in my name, saying, 'I am [he],' and 'The time is near!' Do not go after them!
Hebrews 2:1
Because of this, [it is] all the more necessary [that] we pay attention to the [things] we have heard, lest we drift away.
Hebrews 3:12
Watch out, brothers, lest there be in some of you an evil, unbelieving heart, [with the result that you] fall away from the living God.
Hebrews 4:1
Therefore let us fear, [while there] remains a promise of entering into his rest, that none of you appear to fall short of [it].
Hebrews 12:15
Take care [that] no one falls short of the grace of God; [that] no one growing up [like] a root of bitterness causes trouble, and by it many become defiled;

Your heart

Deuteronomy 13:3
you must not listen to the words of that prophet or to that dreamer, for Yahweh your God {is testing you to know whether you love} Yahweh your God with all of your heart and with all [of] your inner self.
Deuteronomy 29:18
so that {there is not} among you a man or a woman or a clan or a tribe {whose heart} turns {today} from [being] with Yahweh our God to go to serve the gods of these nations, so that there is not among you a root sprouting poison and wormwood.
Job 31:27
and {I was secretly enticed}, and {my hand threw them a kiss},
Isaiah 44:20
[He] feeds [on] ashes; a {deceived mind} misleads him. And he cannot save {himself}, and he cannot say, "Is [this] not an illusion in my right hand?"
James 1:26
If anyone thinks he is religious, [although he] does not bridle his tongue but deceives his heart, this person's religion [is] worthless.
1 John 5:21
Little children, guard yourselves from idols.
Revelation 12:9
And the great dragon was thrown down, the ancient serpent, who is called the devil and Satan, who deceives the whole world. He was thrown down to the earth, and his angels were thrown down with him.
Revelation 13:14
And he deceives those who live on the earth because of the signs that it has been granted to him to perform on behalf of the beast, telling those who live on the earth to make an image to the beast who has the wound of the sword and [yet] lived.
Revelation 20:4
And I saw thrones, and they sat down on them, and authority to judge was granted to them. And [I saw] the souls of those who had been beheaded because of the testimony about Jesus and because of the word of God, and who had not worshiped the beast or his image, and did not receive the mark on their forehead and on their hand, and they came to life and reigned with Christ [for] a thousand years.

And serve

Deuteronomy 8:19
And it will happen [that] if you indeed forget Yahweh your God and you go after other gods and you serve them and you bow down before them, I warn you today that you will surely perish.
Deuteronomy 30:17
However, if your heart turns aside and you [do] not listen and you are lured away and you bow down to other gods and you serve them,