וְהִקְרַבְתָּ֥ אֶת־הַלְוִיִּ֖ם לִפְנֵ֣י יְהוָ֑ה וְסָמְכ֧וּ בְנֵי־יִשְׂרָאֵ֛ל אֶת־יְדֵיהֶ֖ם עַל־הַלְוִיִּֽם׃
און זאָלסט מאַכן גענענען די לוִיִים פֿאַר גאָט, און די קינדער פֿון ישׂראל זאָלן אָנלענען זײערע הענט אױף די לוִיִים.
Rav Hirsch
V. 10. וסמבו וגו׳ (siehe zu Kap. 1, 4). Mit dieser סמיכה spricht die Nation aus, daß alles mit den Leviten vorzunehmende Folgende in ihrem Namen geschehe und es ihr Wille sei, daß die Leviten ihre Stellvertreter dem Heiligtum gegenüber werden.
Chizkuni
וסמכו בני ישראל את ידיהם “and the Children of Israel shall place their hands, etc;” the “Children of Israel” referred to here are the firstborn for whom the Levites had served as atonement. Every firstborn Israelite would place his hands on the Levite who was to perform that service for him.
Haamek Davar
And Bnei Yisroel shall lay. The Levites were like an offering that atones, because they were set apart for Torah and service in the Tent of Meeting. Therefore, Bnei Yisroel were commanded to treat them as an offering, with the laying of hands and waving.