Exodus 12:3-4

3, 4. In the tenth day After this first passover there is no record of any instance where the lamb was selected before the fourteenth day .

A lamb for a house No special number is here mentioned as necessary to constitute the paschal company, but a Jewish tradition fixed ten as the least number, and, reckoning children, it probably averaged about twenty . It became a custom for each person to eat a piece of the lamb about the size of an olive, which would allow the paschal company to be quite large . An individual might not eat the passover alone . Thus was symbolized the fellowship of the Church in partaking of Christ .