Take heed

Deuteronomy 4:9, 23
Only be on your guard and diligently watch yourselves, so that you do not forget the things your eyes have seen, and so that they do not slip from your heart as long as you live. Teach them to your children and grandchildren. . . .

Luke 21:8, 34, 36
Jesus answered, "See to it that you are not deceived. For many will come in My name, claiming, 'I am He, ' and, 'The time is near.' Do not follow them. . . .

Hebrews 2:1
We must pay closer attention, therefore, to what we have heard, so that we do not drift away.

Hebrews 3:12
See to it, brothers, that none of you has a wicked heart of unbelief that turns away from the living God.

Hebrews 4:1
Therefore, while the promise of entering His rest still stands, let us be careful that none of you be deemed to have fallen short of it.

Hebrews 12:15
Be careful that no one falls short of the grace of God, so that no root of bitterness will spring up to cause trouble and defile many.

your heart

Deuteronomy 13:3
you must not listen to the words of that prophet or dreamer. For the LORD your God is testing you to find out whether you love Him with all your heart and with all your soul.

Deuteronomy 29:18
Make sure there is no man or woman, clan or tribe among you today whose heart turns away from the LORD our God to go and worship the gods of those nations. Make sure there is no root among you that bears such poisonous and bitter fruit,

Job 31:27
so that my heart was secretly enticed and my hand threw a kiss from my mouth,

Isaiah 44:20
He feeds on ashes. His deluded heart has led him astray, and he cannot deliver himself or say, "Is not this thing in my right hand a lie?"

James 1:26
If anyone considers himself religious and yet does not bridle his tongue, he deceives his heart and his religion is worthless.

1 John 5:21
Little children, keep yourselves from idols.

Revelation 12:9
And the great dragon was hurled down--the ancient serpent called the devil and Satan, the deceiver of the whole world. He was hurled to the earth, and his angels with him.

Revelation 13:14
Because of the signs it was given to perform on behalf of the first beast, it deceived those who dwell on the earth, telling them to make an image to the beast that had been wounded by the sword and yet had lived.

Revelation 20:4
Then I saw the thrones, and those seated on them had been given authority to judge. And I saw the souls of those who had been beheaded for their testimony of Jesus and for the word of God, and those who had not worshiped the beast or its image, and had not received its mark on their foreheads or hands. And they came to life and reigned with Christ for a thousand years.

and serve

Deuteronomy 8:19
If you ever forget the LORD your God and go after other gods to worship and bow down to them, I testify against you today that you will surely perish.

Deuteronomy 30:17
But if your heart turns away and you do not listen, but are drawn away to bow down to other gods and worship them,