So the land stood long in great peril, for every lord and baron sought but his own advantage; and the Saxons, growing ever more adventurous, wasted and overran the towns and villages in every part.
Then Merlin went to Brice, the Archbishop of Canterbury, and advised him to require all the earls and barons of the realm and all knights and gentlemen-at-arms to come to him at London, before Christmas, under pain of cursing, that they might learn the will of Heaven who should be king. This, therefore, the archbishop did, and upon Christmas Eve were met together in London all the greatest princes, lords, and barons; and long before day they prayed in St. Paul's Church, and the archbishop besought Heaven for a sign who should be lawful king of all the realm.
And as they prayed, there was seen in the churchyard, set straight before the doorways of the church, a huge square stone having a naked sword stuck in the midst of it. And on the sword was written in letters of gold, "Whoso pulleth out the sword from this stone is born the rightful King of Britain."

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