Martin Luther High School is a Christian body, functioning as a ministry of Mid-Michigan Lutheran High School Association, which is a member of the Lutheran Church Missouri Synod. At the heart of Lutheran teaching are the following core beliefs:
- The Trinity: God the Father (Creator of all), Jesus Christ (Son of God and Savior of all mankind), and the Holy Spirit (Creating faith in our hearts through Word and Sacraments).
- Grace Alone: All mankind has sinned and has need for a Savior. It is only through the life, death and resurrection of Jesus Christ that we have assurance of eternal life. He paid for our sins wholly and completely. There is nothing we can do to add to this gift of salvation, given to us.
- Faith Alone: Only through faith in Jesus Christ can we be saved from our sins.We have no decision, no role in our salvation. Through the cross of Christ, we are cleansed of all our sins and made whole before God. We receive this gift of faith through the work of the Holy Spirit, in Word and in Sacraments.
- Scripture Alone: We believe and teach that the Bible is the inspired and inerrant Word of God. It reveals to us the Law, which shows us our sin and our need for a Savior, and the Gospel, the gift of salvation given to us freely in Jesus Christ.