'Sister' in the Bible

I thought, ‘After she has done all these things she will return to Me’; but she did not return, and her treacherous (faithless) sister Judah saw it.

And I saw [that even though Judah knew] that for all the acts of adultery (idolatry) of faithless Israel, I [the Lord] had sent her away and given her a certificate of divorce, yet her treacherous sister Judah was not afraid; but she went and was a prostitute also [following after idols].

Yet in spite of all this her treacherous sister Judah did not return to Me with her whole heart, but rather in [blatant] deception [she merely pretended obedience to King Josiah’s reforms],” declares the Lord.

Therefore thus says the Lord in regard to Jehoiakim the [second] son of Josiah, king of Judah,“The relatives will not lament (mourn over with expressions of grief) for him:‘Alas, my brother!’ or, ‘Alas, sister,’ [how great our loss]!The subjects will not lament for him:‘Alas, master!’ or ‘Alas, majesty [how great was his glory]!’