Passage
And when he was twelve years old, they went up after the custom of the feast;
And when he was twelve years old, they went up after the custom of the feast;
Luke 2:40 And the child grew, and waxed strong, filled with wisdom: and the grace of God was upon him.
Luke 2:41 And his parents went every year to Jerusalem at the feast of the passover.
Luke 2:42 And when he was twelve years old, they went up after the custom of the feast;
Luke 2:43 and when they had fulfilled the days, as they were returning, the boy Jesus tarried behind in Jerusalem; and his parents knew it not;
Luke 2:44 but supposing him to be in the company, they went a day`s journey; and they sought for him among their kinsfolk and acquaintance:
The verse centers on "twelve", "years", "went", "after", "custom", and "feast". It is saying that the verse draws attention to "twelve" and "years", so its meaning should be read from those terms before moving to application.
The nearby context moves from verse 41's "And his parents went every year to..." into verse 43's "and when they had fulfilled the days...", so "twelve" and "years" 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 "twelve" and "years" with trust shaped by these words, not by a vague optimism outside the passage.