Revelation 14:9

And another, the third angel followed these, saying with a great voice, If any one worships the beast and his image, and receives a mark upon his forehead, or upon his hand,

Revelation 14:11

And the smoke of their torment, ascends up into ages of ages: and they have no rest day and night, who worship the beast and his image, and if any one receives the mark of his name.

Matthew 26:52

Then Jesus says to him, Turn away thy sword into its place; for all taking the sword shall perish by the sword.

Treasury of Scripture Knowledge

Summary

And the LORD said unto him, Therefore whosoever slayeth Cain, vengeance shall be taken on him sevenfold. And the LORD set a mark upon Cain, lest any finding him should kill him.

Therefore

Set a mark, etc

Bible References

Therefore

Matthew 26:52
Then Jesus says to him, Turn away thy sword into its place; for all taking the sword shall perish by the sword.

Set a mark, etc

Revelation 14:9
And another, the third angel followed these, saying with a great voice, If any one worships the beast and his image, and receives a mark upon his forehead, or upon his hand,