Berean Study Bible
When those days were over and they were returning home, the boy Jesus remained behind in Jerusalem, but His parents were unaware He had stayed.

King James Bible
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.

American Standard Version
and when they had fulfilled the days, as they were returning, the boy Jesus tarried behind in Jerusalem; and his parents knew it not;

Darby Bible Translation
and had completed the days, as they returned, the boy Jesus remained behind in Jerusalem, and his parents knew not [of it];

Douay-Rheims Bible
And having fulfilled the days, when they returned, the child Jesus remained in Jerusalem; and his parents knew it not.

English Revised Version
and when they had fulfilled the days, as they were returning, the boy Jesus tarried behind in Jerusalem; and his parents knew it not;

Young's Literal Translation
and having finished the days, in their returning the child Jesus remained behind in Jerusalem, and Joseph and his mother did not know,