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

###Input: Luther's rediscovery of "Christ and His salvation" was the first of two points that became the foundation for the Reformation. His railing against the sale of indulgences was based on it.

Archbishop Albrecht of Mainz and Magdeburg did not reply to Luther's letter containing the 95 Theses. He had the theses checked for heresy and in December 1517 forwarded them to Rome. He needed the revenue from the indulgences to pay off a papal dispensation for his tenure of more than one bishopric. As Luther later noted, "the pope had a finger in the pie as well, because one half was to go to the building of St Peter's Church in Rome".

Pope Leo X was used to reformers and heretics, and he responded slowly, "with great care as is proper." Over the next three years he deployed a series of papal theologians and envoys against Luther, which served only to harden the reformer's anti-papal theology. First, the Dominican theologian Sylvester Mazzolini drafted a heresy case against Luther, whom Leo then summoned to Rome. The Elector Frederick persuaded the pope to have Luther examined at Augsburg, where the Imperial Diet was held. There, in October 1518, under questioning by papal legate Cardinal Cajetan Luther stated that he did not consider the papacy part of the biblical Church because historistical interpretation of Bible prophecy concluded that the papacy was the Antichrist. The prophecies concerning the Antichrist soon became the center of controversy. The hearings degenerated into a shouting match. More than his writing the 95 Theses, Luther's confrontation with the church cast him as an enemy of the pope. Cajetan's original instructions had been to arrest Luther if he failed to recant, but the legate desisted from doing so. Luther slipped out of the city at night, unbeknownst to Cajetan.

In January 1519, at Altenburg in Saxony, the papal nuncio Karl von Miltitz adopted a more conciliatory approach. Luther made certain concessions to the Saxon, who was a relative of the Elector, and promised to remain silent if his opponents did. The theologian Johann Eck, however, was determined to expose Luther's doctrine in a public forum. In June and July 1519, he staged a disputation with Luther's colleague Andreas Karlstadt at Leipzig and invited Luther to speak. Luther's boldest assertion in the debate was that Matthew 16:18 does not confer on popes the exclusive right to interpret scripture, and that therefore neither popes nor church councils were infallible. For this, Eck branded Luther a new Jan Hus, referring to the Czech reformer and heretic burned at the stake in 1415. From that moment, he devoted himself to Luther's defeat.

On 15 June 1520, the Pope warned Luther with the papal bull (edict) Exsurge Domine that he risked excommunication unless he recanted 41 sentences drawn from his writings, including the 95 Theses, within 60 days. That autumn, Johann Eck proclaimed the bull in Meissen and other towns. Karl von Miltitz, a papal nuncio, attempted to broker a solution, but Luther, who had sent the Pope a copy of On the Freedom of a Christian in October, publicly set fire to the bull and decretals at Wittenberg on 10 December 1520, an act he defended in Why the Pope and his Recent Book are Burned and Assertions Concerning All Articles. As a consequence, Luther was excommunicated by Pope Leo X on 3 January 1521, in the bull Decet Romanum Pontificem.



###Question: When did papal nuncio Karl von Miltitz get Luther to make concessions ?

###Answer: {'answer':'January 1519'}