1 Corinthians 5:7

(8) Purge out therefore the old leaven, that ye may be a new (e) lump, as ye are unleavened. For even Christ our (f) passover is sacrificed for us:

(8) By alluding to the ceremony of the passover, he exhorts them to cast out that unclean person from among them. In times past, he says, it was not lawful for those who celebrated the passover to eat unleavened bread, insomuch that he was held as unclean and unworthy to eat the passover, whoever had but tasted of leaven. Now our whole life must be as it were the feast of unleavened bread, in which all they that are partakers of that immaculate lamb which is slain, must cast out both of themselves, and also out of their houses and congregations, all impurity.

(e) By lump he means the whole body of the Church, every member of which must be unleavened bread, that is, be renewed in spirit, by plucking away the old corruption.

(f) The Lamb of our passover.