133 Here καί (kai) has been translated contrastively in keeping with the context. This outcome is different from what had happened all the times before.
134 Grk “when the days ended.”
135 The word “home” is not in the Greek text, but has been supplied for clarity.
136 Grk “And his.” Here καί (kai) has not been translated because of differences between Greek and English style.
137 Most , especially later ones (A C Ψ 0130 f13 𝔐 it), read Ἰωσὴφ καὶ ἡ μήτηρ αὐτοῦ (Iōsēph kai hē mētēr aujtou, “[both] Joseph and his mother”), a reading evidently intended to insulate the doctrine of the virgin conception of our Lord. But א B D L W Θ f1 33 579 1241 lat sa read οἱ γονεῖς αὐτοῦ (hoi goneis autou, “his parents”) as in the translation. Such motivated readings as the former lack credibility, especially since the better witnesses affirm the virgin conception of Christ in Luke 1:34–35.

In other versions

And when the feast was ended, as they were returning, the boy Jesus stayed behind in Jerusalem. His parents did not know it,

After the festival was over, while his parents were returning home, the boy Jesus stayed behind in Jerusalem, but they were unaware of it.

After those days were over, as they were returning, the boy Jesus stayed behind in Jerusalem, but his parents did not know it.

After the celebration was over, they started home to Nazareth, but Jesus stayed behind in Jerusalem. His parents didn’t miss him at first,

And after the days were completed, while they were returning, the boy Jesus stayed behind in Jerusalem. And his parents did not know it,

And when they had fulfilled the days, as they returned, the child Jesus tarried behind in Jerusalem; and Joseph and his mother knew not of it.

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