what are the four candles of Advent for? wrong answers only

I see I've caused theological strife in the comments so here's the secret true answer:

the four Sundays of December (with some wiggle room for when Christmas is late in the week).

it's a tradition dating back at least 15 centuries and guess what happens when you have that? you get LOTS of themes.

so y'know what? you get to pick. whatever Famous Four Things are gonna get you into the Christmas spirit of welcoming the stranger in need are now officially the themes of the Advent candles. i don't make the rules.