In Advent we wait, in Christmas we rejoice over the coming of Christ in the fulfillment of the promises, and in Epiphany we celebrate the surprise, the manifestation of Christ to the Gentiles.
In Genesis 1-2, the Lord reveals—or, at a bare minimum, starts dropping some big hints—that he will be quite comfortable becoming a human being himself someday.
Grace does not emancipate us from any requirement of obedience. Rather, grace allows Jesus to be obedient on our behalf that the righteous demands of the law can be fulfilled.
Different groups within Christianity disagree as to whether Jesus should be depicted in icons, crucifixes, paintings, or other visual media. In this article, Chad Bird approaches the question from the angle of both the commandments and the incarnation.