There came letters of sympathy and promises of help from their fellow-Protestants of Geneva, Dauphiné, and France. Over the two latter countries persecution at that hour impended, but their own dangers made them all the more ready to succour their brethren of the Valleys. “Thereupon,” says an historian, “took place one of those grand and solemn scenes, which, at once heroic and religious, seem rather adapted for an epic poem than for grave history.”[66] The Waldenses of Lucerna sent deputies across the mountains, then covered to a great depth with snow, to propose an alliance with the Protestants of the Valley of Pragelas, who were at that time threatened by their sovereign, Francis I. The proposed alliance was joyfully accepted. Assembling on a plateau of snow facing the mountains of Sestrières, and the chain of the Guinevert, the deputies swore to stand by each other, and render mutual support in the coming struggle.[67] It was agreed that this oath of alliance should be sworn with a like solemnity in the Waldensian Valleys. The deputies from Pragelas, crossing the Mount Julien, arrived at Bobbio on the 21st January, 1561. Their coming was singularly opportune. On the evening before, a ducal proclamation had been published in the Valleys, commanding the Vaudois, within twenty-four hours, to give attendance at mass, or abide the consequences--“fire, sword, the cord: the three arguments of Romanism,” says Muston. This was the first news with which the Pragelese deputies were met on their arrival. With all the more enthusiasm they proceeded to renew their oath. Ascending a low hill behind Bobbio, the deputies from Pragelas, and those from Lucerna, standing erect in the midst of the assembled heads of families, who kneeled around, pronounced these words-- “In the name of the Vaudois Churches of the Alps, of Dauphiné, and of Piedmont, which have ever been united, and of which we are the representatives, we here promise, our hands on our Bibles, and in the presence of God, that all our Valleys shall courageously sustain each other in matters of religion, without prejudice to the obedience due to their legitimate superiors. “We promise to maintain the Bible, whole and without admixture, according to the usage of the true Apostolic Church, persevering in this holy religion, though it be at the peril of our life, in order that we may transmit it to our children, intact and pure, as we received it from our fathers. “We promise aid and succour to our persecuted brothers, not regarding our individual interests, but the common cause; and not relying upon man, but upon God.”[68]