In preparation for the judgment that will follow, every time that Ham is named, he is named as the father of Canaan. Ham went into the tent and ‘saw the nakedness of his father, and told his two brethren without.
Love demands that children honour their father and mother, even when their parents let themselves down and behave foolishly. They keep this from the public eye, and long for their parents to recover from this moral collapse. They treasure the thought of their parents behaving well and they honour them and promote their honour to all around, so they draw the veil over such shameful exhibitions.