'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 sister Judah saw it.

And I saw that for all the adulteries of faithless Israel, I had sent her away and given her a writ of divorce, yet her treacherous sister Judah did not fear; but she went and was a harlot also.

Yet in spite of all this her treacherous sister Judah did not return to Me with all her heart, but rather in deception,” declares the Lord.

Therefore thus says the Lord in regard to Jehoiakim the son of Josiah, king of Judah,“They will not lament for him:‘Alas, my brother!’ or, ‘Alas, sister!’They will not lament for him:‘Alas for the master!’ or, ‘Alas for his splendor!’