The Evangelical Lutheran Mission Diocese of Finland builds its teaching and activities on the intact foundation of the Lutheran heritage of faith. The Mission Diocese confesses the biblical faith and teaching that is based on the prophetic and apostolic writings of the Old and New Testament and that is expressed in the Lutheran confessions. The Mission Diocese holds as its highest principle that all teaching, practice and life should be tested, executed and directed by the word of God.

The Mission Diocese aspires to nourish the hearers with the preaching of the Gospel, to deepen the knowledge of the Christian faith by teaching and to revive devotional life in homes with hymns and prayers. The varied publications of the Diocese also serve this basic mission of the congregations.