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Daily Reformation, Deuteronomy 6:4-9
From the Reformer
…we shall briefly sum up the entire Creed in three chief articles, according to the three persons in the Godhead, to whom everything that we believe is related, so that the First Article, of God the Father, explains Creation, the Second Article, of the Son, Redemption, and the Third, of the Holy Ghost, Sanctification. Just as though the Creed were briefly comprehended in so many words: I believe in God the Father, who has created me; I believe in God the Son, who has redeemed me; I believe in the Holy Ghost, who sanctifies me. One God and one faith, but three persons, therefore also three articles or confessions.
—Martin Luther, The Large Catechism
Pulling It Together
The man threw out a challenge: “I will believe in your Christian God if you can explain to me how one God is a Trinity!” One may not tell God the conditions of their belief. One first believes, by his grace, and then comes to understand little by little the One in whom they have placed their faith. Even so, to claim to understand the mystery called God would be to call God less than God. Who can fathom Mystery? Christians simply see in the scriptures that God refers to himself in these three persons. He has called himself both One and, at the same time, plural. Christians do not so much profess to know how this can be; they just believe that it is so.
© Mark E. Ryman, Daily Reformation: Devotions with the Reformers