Deuteronomy 11:16

Beware that your hearts are not deceived, and that you do not turn away and serve other gods and worship them.

Job 31:27

And my heart became secretly enticed,
And my hand threw a kiss from my mouth,

Deuteronomy 8:19

It shall come about if you ever forget the Lord your God and go after other gods and serve them and worship them, I testify against you today that you will surely perish.

Deuteronomy 29:18

so that there will not be among you a man or woman, or family or tribe, whose heart turns away today from the Lord our God, to go and serve the gods of those nations; that there will not be among you a root bearing poisonous fruit and wormwood.

Hebrews 2:1

For this reason we must pay much closer attention to what we have heard, so that we do not drift away from it.

Hebrews 3:12

Take care, brethren, that there not be in any one of you an evil, unbelieving heart that falls away from the living God.

Deuteronomy 4:9

“Only give heed to yourself and keep your soul diligently, so that you do not forget the things which your eyes have seen and they do not depart from your heart all the days of your life; but make them known to your sons and your grandsons.

Deuteronomy 4:23

So watch yourselves, that you do not forget the covenant of the Lord your God which He made with you, and make for yourselves a graven image in the form of anything against which the Lord your God has commanded you.

Deuteronomy 13:3

you shall not listen to the words of that prophet or that dreamer of dreams; for the Lord your God is testing you to find out if you love the Lord your God with all your heart and with all your soul.

Deuteronomy 30:17

But if your heart turns away and you will not obey, but are drawn away and worship other gods and serve them,

Isaiah 44:20

He feeds on ashes; a deceived heart has turned him aside. And he cannot deliver himself, nor say, “Is there not a lie in my right hand?”

Luke 21:8

And He said, “See to it 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

Be on guard, so that your hearts will not be weighted down with dissipation and drunkenness and the worries of life, and that day will not come on you suddenly like a trap;

Luke 21:36

But keep on the alert at all times, praying that you may have strength to escape all these things that are about to take place, and to stand before the Son of Man.”

Hebrews 4:1

Therefore, let us fear if, while a promise remains of entering His rest, any one of you may seem to have come short of it.

Hebrews 12:15

See to it that no one comes short of the grace of God; that no root of bitterness springing up causes trouble, and by it many be defiled;

James 1:26

If anyone thinks himself to be religious, and yet does not bridle his tongue but deceives his own heart, this man’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 serpent of old 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 dwell on the earth because of the signs which it was given him to perform in the presence of the beast, telling those who dwell on the earth to make an image to the beast who *had the wound of the sword and has come to life.

Revelation 20:4

Then I saw thrones, and they sat on them, and judgment was given to them. And I saw the souls of those who had been beheaded because of their testimony of Jesus and because of the word of God, and those who had not worshiped the beast or his image, and had not received 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
“Only give heed to yourself and keep your soul diligently, so that you do not forget the things which your eyes have seen and they do not depart from your heart all the days of your life; but make them known to your sons and your grandsons.
Luke 21:8
And He said, “See to it 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
For this reason we must pay much closer attention to what we have heard, so that we do not drift away from it.
Hebrews 3:12
Take care, brethren, that there not be in any one of you an evil, unbelieving heart that falls away from the living God.
Hebrews 4:1
Therefore, let us fear if, while a promise remains of entering His rest, any one of you may seem to have come short of it.
Hebrews 12:15
See to it that no one comes short of the grace of God; that no root of bitterness springing up causes trouble, and by it many be defiled;

Your heart

Deuteronomy 13:3
you shall not listen to the words of that prophet or that dreamer of dreams; for the Lord your God is testing you to find out if you love the Lord your God with all your heart and with all your soul.
Deuteronomy 29:18
so that there will not be among you a man or woman, or family or tribe, whose heart turns away today from the Lord our God, to go and serve the gods of those nations; that there will not be among you a root bearing poisonous fruit and wormwood.
Job 31:27
And my heart became secretly enticed,
And my hand threw a kiss from my mouth,
Isaiah 44:20
He feeds on ashes; a deceived heart has turned him aside. And he cannot deliver himself, nor say, “Is there not a lie in my right hand?”
James 1:26
If anyone thinks himself to be religious, and yet does not bridle his tongue but deceives his own heart, this man’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 serpent of old 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 dwell on the earth because of the signs which it was given him to perform in the presence of the beast, telling those who dwell on the earth to make an image to the beast who *had the wound of the sword and has come to life.
Revelation 20:4
Then I saw thrones, and they sat on them, and judgment was given to them. And I saw the souls of those who had been beheaded because of their testimony of Jesus and because of the word of God, and those who had not worshiped the beast or his image, and had not received 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
It shall come about if you ever forget the Lord your God and go after other gods and serve them and worship them, I testify against you today that you will surely perish.
Deuteronomy 30:17
But if your heart turns away and you will not obey, but are drawn away and worship other gods and serve them,