'Twelve' in the Bible

Now therefore take you twelve men out of the tribes of Israel, out of every tribe a man.

Take you twelve men out of the people, out of every tribe a man,

And command ye them, saying, Take you hence out of the midst of Jordan, out of the place where the priests' feet stood firm, twelve stones, and ye shall carry them over with you, and leave them in the lodging place, where ye shall lodge this night.

Then Joshua called the twelve men, whom he had prepared of the children of Israel, out of every tribe a man:

And the children of Israel did so as Joshua commanded, and took up twelve stones out of the midst of Jordan, as the LORD spake unto Joshua, according to the number of the tribes of the children of Israel, and carried them over with them unto the place where they lodged, and laid them down there.

And Joshua set up twelve stones in the midst of Jordan, in the place where the feet of the priests which bare the ark of the covenant stood: and they are there unto this day.

And those twelve stones, which they took out of Jordan, did Joshua pitch in Gilgal.

And so it was, that all that fell that day, both of men and women, were twelve thousand, even all the men of Ai.

And Chepharhaammonai, and Ophni, and Gaba; twelve cities with their villages:

And Kattath, and Nahallal, and Shimron, and Idalah, and Bethlehem: twelve cities with their villages.

The children of Merari by their families had out of the tribe of Reuben, and out of the tribe of Gad, and out of the tribe of Zebulun, twelve cities.

So all the cities for the children of Merari by their families, which were remaining of the families of the Levites, were by their lot twelve cities.