'Twelve' in the Bible

Then the children of Israel came to Elim where there were twelve springs of water and seventy date palms, and they camped there beside the waters.

Moses wrote down all the words of the Lord. Then he got up early in the morning, and built an altar [for worship] at the foot of the mountain with twelve pillars (memorial stones) representing the twelve tribes of Israel.

You shall take two onyx stones and engrave on them the names of the [twelve] sons of Israel,

The [engraved] stones shall be twelve, according to the names of [the twelve tribes of] the sons of Israel; they shall be like the engravings of a signet, each with its name for the twelve tribes.

The stones corresponded to the names of the sons of Israel; they were twelve [in all], corresponding to their names, engraved like a signet, each with its name, for the twelve tribes.