The season of Advent is one in which there are several things going on at once, we are awaiting the child to be born in Bethlehem - entering into that world of expectation along with Mary; we are also proclaiming the coming of the Messiah - entering into the world of John the Baptist who proclaimed that we "prepare a way of the Lord;" we are also awaiting Jesus' return to the world - the coming time when God will finally take all things into himself and judge the nations; and, of course, there is the waiting for the celebration of Christmas itself - with both its religious and its secular aspects.
In the reading appointed for today from Luke, the Sadducees ask Jesus a question about the resurrection and the main background we need is to know that the Sadducees did not believe in the resurrection - so this question is about trying to trick and trap Jesus. Jesus does not take the bait about how to understand marriage in heaven ... they weren't really asking about marriage - and Jesus goes right past the trap.
Jesus describes, Those who belong to this age marry and are given in marriage; 35 but those who are considered worthy of a place in that age and in the resurrection from the dead neither marry nor are given in marriage. 36 Indeed they cannot die anymore, because they are like angels and are children of God, being children of the resurrection. 37And the fact that the dead are raised Moses himself showed, in the story about the bush, where he speaks of the Lord as the God of Abraham, the God of Isaac, and the God of Jacob. 38 Now he is God not of the dead, but of the living; for to him all of them are alive.
"They cannot die anymore, because they are like angels and are children of God, being children of the resurrection . . . he is God not of the dead, but of the living; for to him all of them are alive."
The hope of our faith is that while we are concerned with questions that trip us up, temptations that trick us, and even the "works of darkness" that come at us repeatedly, God is not concerned about these things, and He, He, himself has put the "armor of light" upon us. In Christ, we have " become like angels and are children of God!" Just as Jesus stepped right over the trap that the Sadducees laid for him, we too have been given the courage, strength, and lightness to do the same.