A problem with Adult Converts and Adult Instruction Classes is many people have an underlying assumption that they pretty much know enough already. They tend to think one protestant is pretty much as good as another. And perhaps for many churches, that’s true.
Likewise, the classes often seem to be taken with a view of learning the facts of this church body versus that church body. So what you may get is adults who are taking the class with fingers crossed, with an understanding that they are just learning some factoids that may or may not be different than what they already hold, just to make everyone happy. Putting the best construction on it, lots of folks think they are already Christian, but they are changing the details of their beliefs and scholastic systems.
Reality: most of us are barely Christian in practice and mindset and life. We are still growing and maturing at best, and infants at worst. Adult Instruction should be an opportunity to renew the mind and to re-form it in a Christian way. All of us, whether we are life-long Lutherans or Catholics or Baptists, newly converted or cradle-raised, fight against the great/satanic isms of this world: consumerism, individualism, gnosticism, fascism et al., the isms which wage war on nations and on our hearts. Our Christianity, our personal Christendoms are just that: little empires infused with the philosophies and wishdreams of the age.
Catechesis which destroys these strongholds in the heart and minds of men and women is what I want. This is what I dream to teach. Not information, but catechisis; not instruction, but revolution against the powers of the air in this present darkness, the revolution that begins in repentance.