Few reformers tried as hard to stitch together what divided the church as Martin Bucer did. Son of a humble cooper from Sélestat, in Alsace, he spent his life seeking agreement where others saw only rupture, between Luther and Zwingli, between Geneva and Canterbury, between Rome and the Reformation.
Born in 1491, Bucer entered the Dominican order while still a teenager. In 1518, at the Heidelberg Disputation, he heard Luther defend justification by faith and was never the same again: he sought release from his monastic vows, married the former nun Elisabeth Silbereisen, and arrived as a refugee in Strasbourg in 1523.
In the city he became the natural leader of the Reformation, pastor of two parishes and organizer of local church life. His calling as a mediator soon became clear: in 1529, at the Colloquy of Marburg, he tried unsuccessfully to unite Luther and Zwingli on the Lord’s Supper.
In 1536 he had more success: the Wittenberg Concord reconciled Lutherans and Reformed believers of Upper Germany. In 1541, at the Colloquy of Regensburg, he even drafted with the Catholic theologian Johann Gropper a document of doctrinal compromise, an effort for unity that would mark his entire work. Still in 1541, the plague took Elisabeth’s life; the following year, Bucer married Wibrandis Rosenblatt, already widowed by two other reformers, who would remain at his side until the end.
Bucer did not always get it right. In 1539 he advised Prince Philip of Hesse, alongside Luther and Melanchthon, to enter a second marriage without dissolving the first, and agreed that the matter be kept secret. When the arrangement became public, the episode tarnished his reputation and that of everyone involved.
Years later, pressured by Emperor Charles V to accept the Augsburg Interim, he went so far as to sign the decree under house arrest, in 1548. Expelled soon after from Strasbourg, the city he had served for about twenty five years, he left for England in 1549.
In Cambridge, as Regius Professor of Theology, he devoted his final years to advising Thomas Cranmer on the English liturgical reform. His critiques of the 1549 Book of Common Prayer helped shape the 1552 revision, shortly before his death in 1551.
Bucer’s life is a reminder that the pursuit of Christian unity, however imperfect and at times compromised by political calculation, is a legitimate part of the church’s calling. His example invites Christians today to speak across denominational lines without giving up the truth.
