Final answer:
The missing phrase in Matthew 2:11 is 'fell down'; the verse describes the Magi worshiping Jesus, which is part of the Nativity narrative involving figures such as Mary, shepherds, and Magi from different lands.
Step-by-step explanation:
The passage from Matthew 2:11 describes the visit of the Magi, also known as wise men, to the young child Jesus. The Magi, upon seeing Jesus with Mary, presented their gifts to Him and worshiped Him. This event is part of the larger narrative of the Nativity of Christ, which includes the birth of Jesus, depicted in a manger, the presence of Mary, and the visit by the shepherds and the Magi. The Nativity scenes from the Middle Ages often include the three Magi, symbolizing the recognition of Jesus as the Messiah by the entire world, including people from distant lands. The identified keyword 'fell down' completes the verse in Matthew 2:11 which states that the wise men 'saw the young child with Mary his mother and fell down, and worshiped him.'