###Answer the question from the input provided. Please answer from input only.

###Input: In contrast to the views of John Calvin and Philipp Melanchthon, throughout his life Luther maintained that it was not false doctrine to believe that a Christian's soul sleeps after it is separated from the body in death; and, accordingly, he disputed traditional interpretations of some Bible passages, such as the parable of the rich man and Lazarus. This also led Luther to reject the idea of torments for the saints: "It is enough for us to know that souls do not leave their bodies to be threatened by the torments and punishments of hell, but enter a prepared bedchamber in which they sleep in peace." He also rejected the existence of Purgatory, which involved Christian souls undergoing penitential suffering after death. He affirmed the continuity of one's personal identity beyond death. In his Smalcald Articles, he described the saints as currently residing "in their graves and in heaven."

The Lutheran theologian Franz Pieper observed that Luther's teaching about the state of the Christian's soul after death differed from the later Lutheran theologians such as Johann Gerhard. Lessing (1755) had earlier reached the same conclusion in his analysis of Lutheran orthodoxy on this issue.

Luther's Commentary on Genesis contains a passage which concludes that "the soul does not sleep (anima non sic dormit), but wakes (sed vigilat) and experiences visions". Francis Blackburne in 1765 argued that John Jortin misread this and other passages from Luther, while Gottfried Fritschel pointed out in 1867 that it actually refers to the soul of a man "in this life" (homo enim in hac vita) tired from his daily labour (defatigus diurno labore) who at night enters his bedchamber (sub noctem intrat in cubiculum suum) and whose sleep is interrupted by dreams.

In October 1529, Philip I, Landgrave of Hesse, convoked an assembly of German and Swiss theologians at the Marburg Colloquy, to establish doctrinal unity in the emerging Protestant states. Agreement was achieved on fourteen points out of fifteen, the exception being the nature of the Eucharist – the sacrament of the Lord's Supper—an issue crucial to Luther.

The theologians, including Zwingli, Melanchthon, Martin Bucer, and Johannes Oecolampadius, differed on the significance of the words spoken by Jesus at the Last Supper: "This is my body which is for you" and "This cup is the new covenant in my blood" (1 Corinthians 11:23–26). Luther insisted on the Real Presence of the body and blood of Christ in the consecrated bread and wine, which he called the sacramental union, while his opponents believed God to be only spiritually or symbolically present. Zwingli, for example, denied Jesus' ability to be in more than one place at a time but Luther stressed the omnipresence of his human nature. According to transcripts, the debate sometimes became confrontational. Citing Jesus' words "The flesh profiteth nothing" (John 6.63), Zwingli said, "This passage breaks your neck". "Don't be too proud," Luther retorted, "German necks don't break that easily. This is Hesse, not Switzerland." On his table Luther wrote the words "Hoc est corpus meum" ("This is my body") in chalk, to continually indicate his firm stance.



###Question: When did Philip I convene an assembly to set doctrine in the Protestant states?

###Answer: {'answer':'October 1529'}