I propose a new church-growth model: Preach in such a way where you try to offend as many peoples’ sensibilities as possible. Throw as many stumbling blocks in front of religious people as you can. Unashamedly hold out the apparent foolishness of Christian dogma to the skeptical.
A lot of us did not grow up in homes where our parents made concerted efforts at discipling us (largely because no one had done the same for them!) and we struggle to know what discipleship looks like in a Christian home. Richard Baxter helps us with this through 25 directions for family discipleship, which are doable, freeing, and helpful. You’ll find that he prescribes faithful plodding and not heroic conquest.
Leviticus is—admittedly—one of the harder books of the Bible to interpret and apply, but through hard work and study, one will come to see that Leviticus, perhaps as much as any other book, teaches the profound need for mankind to be saved from their sins and God’s gracious provision for that salvation. In my mind, that qualifies the book as a favorite.