Here is Post 1 with introduction, Post 2 and Post 3.
Dec 16: John the Baptist: Mark 1: 1-18
Symbols: shell with water, river
Dec 17: Jesus is Wisdom: Sirach (or Ecclesiasticus) 24:2; Wisdom 8:1
Symbols: oil horn, oil lamp, open book.
Dec18: Jesus is Lord: Ex 3:2, 20:1
Symbols; burning bush, stone tablets.
Dec 19:Jesus is Flower of Jesse: Isiah 11:1-3
Symbols: flower, plant with flower.
Dec 20: Jesus is Key of David: Isiah 22:22
Symbols: key, broken chain.
One more post of ornaments then the tree.