Mark 6:17-18

17 For Herod himself had sent men who arrested John, bound him, and put him in prison on account of Herodias, his brother Philip's wife, because Herod had married her.
18 For John had been telling Herod, "It is not lawful for you to have your brother's wife."

Footnotes 1

New Revised Standard Version Bible, copyright 1989, Division of Christian Education of the National Council of the Churches of Christ in the United States of America. Used by permission. All rights reserved.