[91] For although the seventh day is a lesson to teach us the power which exists in the uncreated God, and also that the creature is entitled to rest from his labours, it does not follow that on that account we may abrogate the laws which are established respecting it, so as to light a fire, or till land, or carry burdens, or bring accusations, or conduct suits at law, or demand a restoration of a deposit, or exact the repayment of a debt, or do any other of the things which are usually permitted at times which are not days of festival.