Passage
Behold thou shalt conceive in thy womb and shalt bring forth a son: and thou shalt call his name Jesus.
Behold thou shalt conceive in thy womb and shalt bring forth a son: and thou shalt call his name Jesus.
Luke 1:29 Who having heard, was troubled at his saying and thought with herself what manner of salutation this should be.
Luke 1:30 And the angel said to her: Fear not, Mary, for thou hast found grace with God.
Luke 1:31 Behold thou shalt conceive in thy womb and shalt bring forth a son: and thou shalt call his name Jesus.
Luke 1:32 He shall be great and shall be called the Son of the Most High. And the Lord God shall give unto him the throne of David his father: and he shall reign in the house of Jacob for ever.
Luke 1:33 And of his kingdom there shall be no end.
The verse centers on "behold", "thou", "shalt", "conceive", "womb", "bring", and "forth". It is saying that the verse draws attention to "behold" and "thou", so its meaning should be read from those terms before moving to application.
The nearby context moves from verse 30's "And the angel said to her Fear..." into verse 32's "He shall be great and shall be...", so "behold" and "thou" belong inside that flow. In Luke context, the local focus is Christ, faith, and discipleship.
A plain takeaway is to answer the verse's own emphasis on "behold" and "thou" with trust shaped by these words, not by a vague optimism outside the passage.