Numbers 7:87

“All the livestock for the burnt offering totaled twelve bulls, twelve rams, and twelve male lambs a year old—together with their grain offerings—and twelve male goats for the sin offering.”

“All the oxen for the burnt offering were twelve bullocks, the rams twelve, the lambs of the first year twelve, with their meat offering: and the kids of the goats for sin offering twelve.”

“all the oxen for the burnt-offering twelve bullocks, the rams twelve, the he-lambs a year old twelve, and their meal-offering; and the males of the goats for a sin-offering twelve;”