Bede's Ecclesiastical History of England, ed. by A.M. Sellar, [1907], at sacred-texts.com
KING OSWALD, with the English nation which he governed, being instructed by the teaching of this bishop, not only learned to hope for a heavenly kingdom unknown to his fathers, but also obtained of the one God, Who made heaven and earth, a greater earthly kingdom than any of his ancestors. In brief, he brought under his dominion all the nations and provinces of Britain, which are divided into four languages, to wit, those of the Britons, the Picts, the Scots, and the English. Though raised to that height of regal power, wonderful to relate, he was always humble, kind, and generous to the poor and to strangers.
To give one instance, it is told, that when he was once sitting at dinner, on the holy day of Easter, with the aforesaid bishop, and a silver dish full of royal dainties was set before him, and they were just about to put forth their hands to bless the bread, the servant, whom he had appointed to relieve the needy, came in on a sudden, and told the king, that a great multitude of poor folk from all parts was sitting in the streets begging alms of the king; he immediately ordered the meat set before him to be carried to the poor, and the dish to be broken in pieces and divided among them. At which sight, the bishop who sat by him, greatly rejoicing at such an act of piety, clasped his right hand and said, "May this hand never decay." This fell out according to his prayer, for his hands with the arms being cut off from his body, when he was slain in battle, remain uncorrupted to this day, and are kept in a silver shrine, as revered relics, in St. Peter’s church in the royal city, which has taken its name from Bebba, one of its former queens. Through this king’s exertions the provinces of the Deiri and the Bernicians, which till then had been at variance, were peacefully united and moulded into one people. He was nephew to King Edwin through his sister Acha; and it was fit that so great a predecessor should have in his own family such an one to succeed him in his religion and sovereignty.