He advised Forret, therefore, if he was determined to preach, to preach only on "one good Epistle or one good Gospell that setteth forth the libertie of the holie church." On Forret explaining that he had never found any evil epistle or gospel in the New or Old Testament, then "spake my lord stoutlie and said, 'I thank God that I never knew what the Old and the New Testament was.'" This innocent instance of devout gratitude on the part of the bishop gave rise to a proverb in Scotland: "Ye are like the Bishop of Dunkeld that knew neither the new law nor the old law." Forret systematically warned his parishioners against the sellers of indulgences. He also took care specially to teach them the ten commandments, and composed a short catechism for their instruction on points of prime importance in Christian belief. He was in the habit of carrying bread and cheese in his gown sleeve to any poor person who was ill. He studied from six in the morning till twelve, and again from dinner till supper, and, in order the better to hold his own against disputants, committed three chapters of the New Testament in Latin to memory every day, making his servant, Andrew Kirkie, hear him repeat them at night. Though summoned several times before the Bishop of Dunkeld, he escaped further interference until February 1539–40, when he and four others were summoned before David Beaton (the archbishop of St Andrews), Gavin Dunbar (the archbishop of Glasgow), and William Chisholm (the Bishop of Dunblane) as "chief heretics and teachers of heresy," and especially for being present at the marriage of the vicar of Tullibodie, and for eating flesh during Lent at the marriage. They were burned on the Castle Hill of Edinburgh on 28 February. List of Protestant martyrs of the Scottish Reformation