'Twelve' in the Bible

So take twelve men out of the tribes of Israel, a man from every tribe.

Take twelve men from the people, a man for every tribe,

And say to them, Take up from the middle of Jordan, from the place where the feet of the priests were resting, twelve stones, and take them over with you and put them down in the place where you take your rest tonight.

So Joshua sent for the twelve men, whom he had ready, one man out of every tribe of the children of Israel,

So the children of Israel did as Joshua gave them orders, and took twelve stones from the middle of Jordan, as the Lord had said to Joshua, one for every tribe of the children of Israel; these they took across with them to their night's resting-place and put them down there.

And Joshua put up twelve stones in the middle of Jordan, where the feet of the priests who took up the ark of the agreement had been placed: and there they are to this day.

And the twelve stones which they took out of Jordan, Joshua put up in Gilgal.

On that day twelve thousand were put to death, men and women, all the people of Ai.

And Chephar-Ammoni and Ophni and Geba; twelve towns with their unwalled places;

And Kattath and Nahalal and Shimron and Idalah and Beth-lehem; twelve towns with their unwalled places.

The children of Merari by their families were given twelve towns from the tribes of Reuben and Gad and Zebulun.

All these towns were given to the children of Merari by their families, that is, the rest of the families of the Levites; and their heritage was twelve towns.