'Sister' in the Bible

I thought: After she has done all these things, she will return to Me. But she didn’t return, and her treacherous sister Judah saw it.

I observed that it was because unfaithful Israel had committed adultery that I had sent her away and had given her a certificate of divorce. Nevertheless, her treacherous sister Judah was not afraid but also went and prostituted herself.

Therefore, this is what the Lord says concerning Jehoiakim son of Josiah, king of Judah:They will not mourn for him, saying,“Woe, my brother!” or “Woe, my sister!”They will not mourn for him, saying,“Woe, lord! Woe, his majesty!”