Scotus held that while our duties to God (the first three commandments, traditionally thought of as the First Tablet) are self-evident, true by definition, and unchangeable even by God, our duties to others (found on the second tablet) were arbitrarily willed by God and are within his power to revoke and replace (although, the third commandment, to honour the Sabbath and keep it holy, has a little of both, as we are absolutely obliged to render worship to God, but there is no obligation in natural law to do it on this day or that).