The moed of Chag HaMatzot [the Feast of Unleavened Bread] occurs the day after Pesach and gives us a picture of removing sin from our lives immediately as we are set free from bondage in Egypt. In this moed we can see the sinless Messiah and the sanctifying work of G-d's Holy Spirit.
As we remove the physical leaven from our homes we should also strive to remove the spiritual leaven of sin from our lives.
Consider what Scripture says about this festival and the commandments surrounding it: what are we to do and when are we to do it? And we should never forget the One for whom we do all of it: our Maker and Redeemer.