It has become commonplace for Lutheran pastors to become Roman Catholic - or as we say to swim the Tiber. The companion expression is to swim the Bosporus for those who become Orthodox. Recently I heard a report that a pastor that I have known and respected did swim the Tiber.
Why is this happening? Often times it is the best and the brightest that we are losing. The answer is complex and varied. But one factor is that we in the Missouri Synod are failing to be Lutheran. Confessional Lutheranism is built around an authoritative Scripture and authoritative confession which is expressed in practice in the liturgy. This also results in an authoritative ministry, speaking the words of Scripture. At the heart of this is the concept of means of Grace. We do not believe that God's gifts are floating around out there, but that they are applied to each Christian, directly, by name, in Word and Sacrament.
We have this structure on paper but often not in practice. C.F.W. Walther, the first president of the LCMS, stated that no one dare challenge a pastor when he is correctly speaking the Word of God. Yet, I have had congregational leaders, including elders, tell me to my face that they don't care what the Bible says. Many of our congregations are begging to adopt non-Lutheran worship practices, which implicitly deny our understanding of means of grace.
Rome has many problems, from the perspective of confessional Lutheranism. But they have structure and they do believe in means of grace. This is why many of our best and brightest are swimming the Tiber - they see Rome as more Lutheran than most Lutherans are.