출애굽기 32:29 해설: Rashi, Chizkuni, Da'at Zekenim & Sforno

מלאו ידכם CONSECRATE YOURSELVES — You who are killing them (your own relatives) will by this very act install yourselves as priests of the Omnipresent God,

מלאו ידכם היום, “dedicate yourselves today, etc.;” Moses tells these people that they had already proved their absolute loyalty to Hashem, as they had not hesitated to kill members of their own family if those had been amongst the three thousand men mentioned in the last verse. This is also how our author understands Targum Onkelos on our verse. The point is not to understand Moses as using the expression: מלאו ידכם, as being in the future tense.

ולתת עליכם היום ברכה, “so that he may bestow a blessing on you this day.” From this day on the blessings that Moses bestowed on the Levites as described in Deuteronomy 33,8 additionally, although Yaakov had failed to bless them on his deathbed became effective, just as Moses blessed Reuven, although Yaakov had failed to bless him. He received a blessing from Moses although he did not receive it from his father Yaakov, as in the meantime his descendants had volunteered to be the vanguard of the army of the Israelites when they conquered the land of Canaan and they did not return to their families for 14 years until all the tribes had received their ancestral lands.

כי איש FOR EVERY MAN among you will consecrate himself בבנו ובאחיו BY HIS SON AND HIS BROTHER (by their death at his hand).