(Devarim 12:5) "and you shall come there … (6) and you shall bring there": Why is this stated (i.e., it is essentially stated elsewhere). Because it is written (Vayikra 23:37) "These are the festivals of the L-rd, which you shall call holy callings to present a fire-offering to the L-rd, a burnt-offering and a meal-offering, sacrifice and drink-offerings, the thing of the day in its day."