In Luke 2:7, the actual birth scene matches the angel's sign: baby wrapped in cloths, lying in a manger.

In Luke 2:16, the shepherds find exactly what the angel promised: the baby in a manger.

In Isaiah 53:2, the Messiah has no beauty; the manger is the first sign of his humble appearance, prefiguring his lowly life.

In 1 Samuel 10:2-7, Samuel gives Saul signs confirming his anointing as king; the shepherds receive a sign confirming the newborn King.

In Matthew 8:20, Jesus' adult homelessness echoes the humble manger sign — both show His lack of earthly dwelling.

In Exodus 3:12, God gives a sign ('this shall be a token') to confirm Moses' mission; here a sign confirms the birth of the Savior.

In 2 Kings 19:29, God gives Hezekiah a sign of future deliverance; the manger is a sign of deliverance through the newborn Savior.