Passage
And, behold, thou shalt conceive in thy womb, and bring forth a son, and shalt call his name JESUS.
And, behold, thou shalt conceive in thy womb, and bring forth a son, and shalt call his name JESUS.
Luke 1:29 And when she saw him, she was troubled at his saying, and cast in her mind what manner of salutation this should be.
Luke 1:30 And the angel said unto her, Fear not, Mary: for thou hast found favour with God.
Luke 1:31 And, behold, thou shalt conceive in thy womb, and bring forth a son, and shalt call his name JESUS.
Luke 1:32 He shall be great, and shall be called the Son of the Highest: and the Lord God shall give unto him the throne of his father David:
Luke 1:33 And he shall reign over the house of Jacob for ever; 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 unto 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.