Exodus 12:2-4

Young's Literal Translation

² `This month [is] to you the chief of months -- it [is] the first to you of the months of the year;

³ speak ye unto all the company of Israel, saying, In the tenth of this month -- they take to them each man a lamb for the house of the fathers, a lamb for a house.

⁴ `(And if the household be too few for a lamb, then hath he taken, he and his neighbour who is near unto his house, for the number of persons, each according to his eating ye do count for the lamb,)