Did anyone know that the one born of the Virgin was the Messiah, the Savior?

The angels testified of Him when they appeared to the shepherds and urged them to worship Him (Luke 2:8–15).

A great star guided the Magi (St. John Chrysostom says that this was an angel in the form of a star) to come and find Him, preaching as they travelled that they were going to worship the King of the Jews. They offered Him gold as to a King; frankincense as to a heavenly High Priest; and myrrh as to the Crucified One who suffers for the salvation of humanity (Matt. 2:1–12).

The Holy Spirit declared the identity of the child Jesus to Simeon the elder and Anna the prophetess (Luke 2:25–38).

St. John the Baptist testified of Him, saying, “Behold! The Lamb of God who takes away the sin of the world!” (John 1:36).

The Father testified of Him when He was baptized in the River Jordan, saying, “This is my beloved Son, in whom I am well pleased” (Matt. 3:17). He also testified of Him during His transfiguration before three of His disciples (Mark 9).