1. As human nature now is, it is very expedient that those who are so much together in youth, should, by such a restriction be taught to look upon all such intercourse as prohibited and incestuous; for unless such restrictions are made, it would be impossible to prevent the prevalence of very early corruption among young persons. (See Michaelis on the laws of Moses, Art.

108.)

2. That the duties owing by nature to relatives might not be confounded with those of a social or political kind; for could a man be a brother and a husband, or a son and a husband at the same time, and fulfil the duties of both? Impossible.

3. That by intermarrying with other families, relationship and its endearments might be diffused. These prohibitions are, therefore to be considered so eminently moral obligations as to be observed by all mankind

to uncover

利未記 18:7-19
不可露你母親的下體，羞辱了你父親。她是你的母親，不可露她的下體。…

利未記 20:11,12,17-21
與繼母行淫的，就是羞辱了他父親，總要把他們二人治死，罪要歸到他們身上。…