Thy brother’s wife - That is, if she had children. See Deuteronomy 25:5. The law here expressed was broken by Antipas in his connection with Herodias Matthew 14:3-4.
Related Commentaries of Leviticus 18:16
Leviticus 18:16
16 Thou shalt not uncover the nakedness of thy brother's wife: it is thy brother's nakedness.