Then the kings--a numerous class in Erin--were also taught their duties, and by one who was able to give a sanction to his teaching. The duty of the king is to judge no one unjustly; to be the protector of the stranger, the widow, and the orphan; to punish thefts and adulteries; not to encourage unchaste buffoons, nor exalt the wicked, but root them out of the land; to put to death parricides and perjurers; to defend the Church and give alms to the poor; to select just and wise ministers, and prudent counsellors; to give no countenance to druids, or pythonesses, or augurers; to defend his country in strength and in justice; to put his confidence in God, not being elated by prosperity nor cast down by adversity; to profess the Catholic faith and restrain his sons from evil deeds; to give time to prayer, and not to spend it unduly in unseasonable banquets. This, he says, is the justice of a king, which secures the peace of the people, the defence of the country, the rights of the poor, and all other blessings spiritual and temporal, including fruitful trees, abundant crops, genial weather, and universal happiness. Such were the noble principles inculcated by St. Patrick in his preaching, formulated in his laws, and enforced by all the power of his authority.[77] Although St. Patrick was accompanied to Ireland by a very considerable number of clerics of every order to aid him in his great task of the conversion of Ireland, still he must have found it difficult, as new churches were founded and the foreign clergy died out, to supply labourers for the ripening vineyard. As yet there were no Christian Schools in Erin. Armagh was probably the first, but Armagh was not founded until A.D. 445, when the site of a cathedral was granted by Daire to Patrick on Macha's Height. The school could not be organized for some years later, perhaps about the year A.D. 450. But meantime Patrick had organized a kind of peripatetic school, which accompanied the Saint in his frequent missionary journeys through the various parts of the country. He himself spent his time in preaching, baptizing, founding churches, and making such provision, as he could, for the administration of the sacraments and the celebration of Mass. The clerical students, his disciples, accompanied him, and in this way were able to obtain both theoretical and practical instruction in the work of missionary life. The instruction which the Bards, Brehons, and Druids communicated to their disciples was mainly, if not exclusively, of an oral character. The memory was highly trained by exercise, and the art of recitation was carried to a wonderful degree of perfection. The disciples too accompanied the master on his rounds from one chieftain's dun to another, and were sharers in the hospitality and rewards, which were freely bestowed on all.