The starting point of Lutheran theology could easily be pointed to Luther's presentation to the Augustinian order concerning being a theologian of the cross. This is the foundation of the Lutheran tradition and takes us away from ourselves, our glory, and places it completely on the cross. Here is the introduction from www.bookofconcord.com
The Heidelberg Disputation
Distrusting completely our own wisdom, according to that counsel of the Holy Spirit,
When was the last time you heard someone say that the Law was a salutary doctrine? Often we will demonize the law because it makes us feel bad, does not save, and for all intensive purposes is NOT the Gospel.
Yet, Luther begins by calling it the most salutary of doctrines because it points us to Christ. Even though the law can not advance us to God and does nothing but hinder us from perfection. The law thrusts us from self reliance to a need for a Savior. Thus it is the most salutary of doctrines.
Every time I read through the Disputation I fully feel the problem of my sinfulness and my need for Jesus. As we travel through the disputation remember your sins, your great need for atonement, but even more so the great love of our Lord.
Lord have mercy