'Twelve' in the Bible
These are the ones who were numbered, whom Moses and Aaron numbered, with the leaders of Israel, twelve men, each of whom was of his father’s household.
When they brought their offering before the Lord, six covered carts and twelve oxen, a cart for every two of the leaders and an ox for each one, then they presented them before the tabernacle.
This was the dedication offering for the altar from the leaders of Israel when it was anointed: twelve silver dishes, twelve silver bowls, twelve gold pans,
the twelve gold pans, full of incense, weighing ten shekels apiece, according to the shekel of the sanctuary, all the gold of the pans 120 shekels;
all the oxen for the burnt offering twelve bulls, all the rams twelve, the male lambs one year old with their grain offering twelve, and the male goats for a sin offering twelve;
“Speak to the sons of Israel, and get from them a rod for each father’s household: twelve rods, from all their leaders according to their fathers’ households. You shall write each name on his rod,
Moses therefore spoke to the sons of Israel, and all their leaders gave him a rod apiece, for each leader according to their fathers’ households, twelve rods, with the rod of Aaron among their rods.
‘Then on the second day: twelve bulls, two rams, fourteen male lambs one year old without defect;
So there were furnished from the thousands of Israel, a thousand from each tribe, twelve thousand armed for war.
They journeyed from Marah and came to Elim; and in Elim there were twelve springs of water and seventy palm trees, and they camped there.