Christianity preaches the infinite worth of that which is seemingly worthless and the infinite worthlessness of that which is seemingly so valued.
Diedrich Bonhoeffer quoted by Eric Metaxas, Bonhoeffer: Pastor, Martyr, Prophet, Spy, page 85
In New York they preach about virtually everything; only one thing is not addressed, or is addressed so rarely that I have as yet been unable to hear it, namely, the gospel of Jesus Christ, the cross, sin, and forgiveness, death and life.
Diedrich Bonhoeffer 1930
In this lecture, Bonhoeffer tipped one sacred cow after the other. Having dealt with the idea of Christ as no mere ethicist, he proceeded to explain the similarity of the Christian religion to other religions. Then he came to his main point: the essence of Christianity is not about religion at all, but about the person of Christ…religion was a dead, man-made thing, and at the heart of Christianity was something else entirely - God himself, alive.
Eric Mexaxas, Bonhoeffer: Pastor, Martyr, Prophet, Spy, page 83
Marriage is more than your love for each other…In your love you see only the heaven of your own happiness, but in marriage you are placed at a post of responsibility towards the world and mankind. Your love is your own private possession, but marriage is more than something personal - it is a status, and office. Just as it is the crown, and not merely the will to rule, that makes the king, so it is marriage, and not merely your love for each other, that joins you together in the sight of God and man.
Diedrich Bonhoeffer, A Wedding Sermon From A Prison Cell (as quoted by John Piper in This Momentary Marriage: A Parable of Permanence)
It is by the grace of God that a congregation is permitted to gather visibly in this world to share God’s Word and sacrament. Not all Christians receive this blessing. The imprisoned, the sick, the scattered lonely, the proclaimers of the Gospel in heathen lands stand alone. They know that visible fellowship is a blessing. They remember, as the Psalmist did, how they went ‘with the multitude … to the house of God, with the voice of joy and praise, with a multitude that kept holyday (Ps. 42:4) … Therefore, let him who until now has had the privilege of living in common Christian life with other Christians praise God’s grace from the bottom of his heart. Let him thank God on his knees and declare: It is grace, nothing but grace, that we are allowed to live in community with Christian brethren.
Diedrich Bonhoeffer