In John Stott's excellent book, Through the Bible through the year, he notes,
'Thus the emperor and the innkeeper both played their part in God's plan without knowing it. The emperor's edict brought Joseph and May to Bethlehem in fulfilment of prophecy (Mic 5.2, Matt 2.5-6). And the innkeeper, by reason of overcrowding in the town, ensured that the Saviour of the world was born appropriately not in a palace but in a stable, not in splendour but in obscurity and poverty'
'Veiled in flesh the Godhead see, hail the incarnate deity!