Mark 6:18

For John said to Herod, It is not lawful for thee to have the wife of thy brother.

Leviticus 18:16

The nakedness of thy brother's wife shalt thou not uncover: it is thy brother's nakedness.

Leviticus 20:21

And if a man take his brother's wife, it is an unclean thing: he hath uncovered his brother's nakedness: they shall be childless.

1 Kings 22:14

And Micah said, As Jehovah liveth, even what Jehovah shall say to me, that will I speak.

Ezekiel 3:18-19

When I say unto the wicked, Thou shalt certainly die; and thou givest him not warning, nor speakest to warn the wicked from his wicked way, that he may live: the same wicked man shall die in his iniquity; but his blood will I require at thy hand.

Matthew 14:3-4

For Herod had seized John, and had bound him and put him in prison on account of Herodias the wife of Philip his brother.

Acts 20:26-27

Wherefore I witness to you this day, that I am clean from the blood of all,

Acts 24:24-26

And after certain days, Felix having arrived with Drusilla his wife, who was a Jewess, he sent for Paul and heard him concerning the faith in Christ.

Treasury of Scripture Knowledge

Summary

For John had said unto Herod, It is not lawful for thee to have thy brother's wife.

General references

Bible References

It is

Leviticus 18:16
The nakedness of thy brother's wife shalt thou not uncover: it is thy brother's nakedness.
Leviticus 20:21
And if a man take his brother's wife, it is an unclean thing: he hath uncovered his brother's nakedness: they shall be childless.
1 Kings 22:14
And Micah said, As Jehovah liveth, even what Jehovah shall say to me, that will I speak.
Ezekiel 3:18
When I say unto the wicked, Thou shalt certainly die; and thou givest him not warning, nor speakest to warn the wicked from his wicked way, that he may live: the same wicked man shall die in his iniquity; but his blood will I require at thy hand.
Matthew 14:3
For Herod had seized John, and had bound him and put him in prison on account of Herodias the wife of Philip his brother.
Acts 20:26
Wherefore I witness to you this day, that I am clean from the blood of all,
Acts 24:24
And after certain days, Felix having arrived with Drusilla his wife, who was a Jewess, he sent for Paul and heard him concerning the faith in Christ.

General references

Matthew 14:4
For John said to him, It is not lawful for thee to have her.
Luke 3:19
But Herod the tetrarch, being reproved by him as to Herodias, the wife of his brother, and as to all the wicked things which Herod had done,