Numbers 31:18

But all the female children who have had no sex relations with men, you may keep for yourselves.

Deuteronomy 21:10-14

When you go out to war against other nations, and the Lord your God gives them up into your hands and you take them as prisoners;

Leviticus 25:44

But you may get servants as property from among the nations round about; from them you may take men-servants and women-servants.

Deuteronomy 20:14

But the women and the children and the cattle and everything in the town and all its wealth, you may take for yourselves: the wealth of your haters, which the Lord your God has given you, will be your food.

2 Chronicles 28:8-10

And the children of Israel took away as prisoners from their brothers, two hundred thousand, women and sons and daughters, and a great store of their goods, and took them to Samaria.

Isaiah 14:2

And the people will take them with them to their place: and the children of Israel will give them a heritage in the Lord's land as men-servants and women-servants, making them prisoners whose prisoners they were; and they will be rulers over their masters.

Treasury of Scripture Knowledge

Summary

But all the women children, that have not known a man by lying with him, keep alive for yourselves.

Bible References

Keep alive for yourselves

Deuteronomy 20:14
But the women and the children and the cattle and everything in the town and all its wealth, you may take for yourselves: the wealth of your haters, which the Lord your God has given you, will be your food.
Deuteronomy 21:10
When you go out to war against other nations, and the Lord your God gives them up into your hands and you take them as prisoners;
2 Chronicles 28:8
And the children of Israel took away as prisoners from their brothers, two hundred thousand, women and sons and daughters, and a great store of their goods, and took them to Samaria.
Isaiah 14:2
And the people will take them with them to their place: and the children of Israel will give them a heritage in the Lord's land as men-servants and women-servants, making them prisoners whose prisoners they were; and they will be rulers over their masters.

Basic English, produced by Mr C. K. Ogden of the Orthological Institute - public domain