Soteriology is the study of salvation. Salvation is so much more than how to get to heaven, but all that is involved in salvation. When you study soteriology it should leave you speechless once learning all that God has done, is doing and is going to do.
First John is a great letter teaching that Jesus is God who came in the flesh and that you must believe that He did for salvation. John also enforces the absolute necessity of love for God and the church.
Anthropology means the study of man. Where did we come from and why are we here?
Putting your faith to the true test. Jesus said you will know them by their fruit. It is evident that a Christian should be known by the way they live their lives in Christ and James makes this clear in his short book.
One of the most important things we can learn as Christians is how to rightly divide the Word of Truth. God tells us in His word to study to show ourselves approved unto God and hermeneutics helps us to achieve that goal.
Jesus said that He would build His church and the gates of Hades would not prevail against it, but do we as Christians know what the church is what its purpose is? What is the purpose of the church and how are we to fulfill our purpose? What is the difference between the universal church and the local church? These questions and so many others will be covered every Sunday during Sunday School.