Galatians 1:8

But though we, or an angel from heaven, should preach any other gospel to you than that which we have preached to you, let him be accursed.

Romans 9:3

For I could wish that myself were accursed from Christ, for my brethren, my kinsmen according to the flesh:

1 Corinthians 16:22

If any man loveth not the Lord Jesus Christ, let him be Anathema, Maran-atha.

2 Corinthians 11:13-14

For such are false apostles, deceitful workers, transforming themselves into the apostles of Christ.

Matthew 25:41

Then will he say also to them on the left hand, Depart from me, ye cursed, into everlasting fire, prepared for the devil and his angels:

Galatians 1:9

As we said before, so I say now again, If any man preacheth any other gospel to you than that ye have received, let him be accursed.

Revelation 22:18-19

For I testify to every man that heareth the words of the prophecy of this book, if any man shall add to these things, God will add to him the plagues that are written in this book:

Genesis 9:25

And he said, Cursed be Canaan, a servant of servants shall he be to his brethren.

Deuteronomy 27:15-26

Cursed be the man that maketh any graven or molten image, an abomination to the LORD, the work of the hands of the artificer, and putteth it in a secret place: and all the people shall answer, and say Amen.

Joshua 9:23

Now therefore ye are cursed, and there shall none of you be freed from being bond-men, and hewers of wood and drawers of water for the house of my God.

1 Samuel 26:19

Now therefore, I pray thee, let my lord the king hear the words of his servant. If the LORD hath stirred thee up against me, let him accept an offering: but if they are the children of men, cursed be they before the LORD; for they have driven me out this day from abiding in the inheritance of the LORD, saying, Go, serve other gods.

Nehemiah 13:25

And I contended with them, and cursed them, and smote certain of them, and plucked off their hair, and made them swear by God, saying, Ye shall not give your daughters to their sons, nor take their daughters to your sons, or for yourselves.

Mark 14:71

But he began to curse and to swear, saying, I know not this man of whom ye speak.

Acts 23:14

And they came to the chief priests and elders, and said, We have bound ourselves under a great curse, that we will eat nothing until we have slain Paul.

1 Corinthians 12:3

Wherefore I give you to understand, that no man speaking by the Spirit of God, calleth Jesus accursed: and that no man can say that Jesus is the Lord, but by the Holy Spirit.

Galatians 3:10

For as many as are of the works of the law, are under the curse: for it is written, Accursed is every one that continueth not in all things which are written in the book of the law to do them.

Galatians 3:13

Christ hath redeemed us from the curse of the law, being made a curse for us: for it is written, Accursed is every one that hangeth on a tree:

1 Timothy 1:19-20

Holding faith and a good conscience; which some having put away, concerning faith have made shipwreck:

Titus 3:10

A man that is a heretic, after the first and second admonition, reject;

2 Peter 2:14

Having eyes full of adultery, and that cannot cease from sin; beguiling unstable souls: they have a heart exercised with covetous practices; cursed children:

Treasury of Scripture Knowledge

Summary

But though we, or an angel from heaven, preach any other gospel unto you than that which we have preached unto you, let him be accursed.

Bible References

Though

Galatians 1:9
As we said before, so I say now again, If any man preacheth any other gospel to you than that ye have received, let him be accursed.
1 Corinthians 16:22
If any man loveth not the Lord Jesus Christ, let him be Anathema, Maran-atha.
2 Corinthians 11:13
For such are false apostles, deceitful workers, transforming themselves into the apostles of Christ.
1 Timothy 1:19
Holding faith and a good conscience; which some having put away, concerning faith have made shipwreck:
Titus 3:10
A man that is a heretic, after the first and second admonition, reject;
Revelation 22:18
For I testify to every man that heareth the words of the prophecy of this book, if any man shall add to these things, God will add to him the plagues that are written in this book:

Let

Galatians 3:10
For as many as are of the works of the law, are under the curse: for it is written, Accursed is every one that continueth not in all things which are written in the book of the law to do them.
Genesis 9:25
And he said, Cursed be Canaan, a servant of servants shall he be to his brethren.
Deuteronomy 27:15
Cursed be the man that maketh any graven or molten image, an abomination to the LORD, the work of the hands of the artificer, and putteth it in a secret place: and all the people shall answer, and say Amen.
Joshua 9:23
Now therefore ye are cursed, and there shall none of you be freed from being bond-men, and hewers of wood and drawers of water for the house of my God.
1 Samuel 26:19
Now therefore, I pray thee, let my lord the king hear the words of his servant. If the LORD hath stirred thee up against me, let him accept an offering: but if they are the children of men, cursed be they before the LORD; for they have driven me out this day from abiding in the inheritance of the LORD, saying, Go, serve other gods.
Nehemiah 13:25
And I contended with them, and cursed them, and smote certain of them, and plucked off their hair, and made them swear by God, saying, Ye shall not give your daughters to their sons, nor take their daughters to your sons, or for yourselves.
Matthew 25:41
Then will he say also to them on the left hand, Depart from me, ye cursed, into everlasting fire, prepared for the devil and his angels:
2 Peter 2:14
Having eyes full of adultery, and that cannot cease from sin; beguiling unstable souls: they have a heart exercised with covetous practices; cursed children:

General references

Leviticus 15:8
And if he that hath the issue shall spit upon him that is clean; then he shall wash his clothes, and bathe himself in water, and be unclean until the evening.
Jeremiah 16:20
Shall a man make gods to himself, and they are no gods?
1 Corinthians 3:11
For other foundation can no man lay than that which is laid, which is Jesus Christ.