Verses with the word sisters in the Old Testament (10 verses):

Joshua 2:13
And that ye will save alive my father, and my mother, and my brethren, and my sisters, and all that they have, and deliver our lives from death.

1 Chronicles 2:16
Whose sisters were Zeruiah, and Abigail. And the sons of Zeruiah; Abishai, and Joab, and Asahel, three.

Job 1:4
And his sons went and feasted in their houses, every one his day; and sent and called for their three sisters to eat and to drink with them.

Job 42:11
Then came there unto him all his brethren, and all his sisters, and all they that had been of his acquaintance before, and did eat bread with him in his house: and they bemoaned him, and comforted him over all the evil that the LORD had brought upon him: every man also gave him a piece of money, and every one an earring of gold.

Ezekiel 16:45
Thou art thy mother's daughter, that lotheth her husband and her children; and thou art the sister of thy sisters, which lothed their husbands and their children: your mother was an Hittite, and your father an Amorite.

Ezekiel 16:51
Neither hath Samaria committed half of thy sins; but thou hast multiplied thine abominations more than they, and hast justified thy sisters in all thine abominations which thou hast done.

Ezekiel 16:52
Thou also, which hast judged thy sisters, bear thine own shame for thy sins that thou hast committed more abominable than they: they are more righteous than thou: yea, be thou confounded also, and bear thy shame, in that thou hast justified thy sisters.

Ezekiel 16:55
When thy sisters, Sodom and her daughters, shall return to their former estate, and Samaria and her daughters shall return to their former estate, then thou and thy daughters shall return to your former estate.

Ezekiel 16:61
Then thou shalt remember thy ways, and be ashamed, when thou shalt receive thy sisters, thine elder and thy younger: and I will give them unto thee for daughters, but not by thy covenant.

Hosea 2:1
Say ye unto your brethren, Ammi; and to your sisters, Ruhamah.