וְלָקַחְתִּ֨י אֶתְכֶ֥ם לִי֙ לְעָ֔ם וְהָיִ֥יתִי לָכֶ֖ם לֵֽאלֹהִ֑ים וִֽידַעְתֶּ֗ם כִּ֣י אֲנִ֤י יְהוָה֙ אֱלֹ֣הֵיכֶ֔ם הַמּוֹצִ֣יא אֶתְכֶ֔ם מִתַּ֖חַת סִבְל֥וֹת מִצְרָֽיִם׃
I przyjmę was Sobie za lud, i będę wam Bogiem, a poznacie, żem Ja Wiekuisty, Bóg wasz, który wyprowadza was z pod brzemienia Micraimu.
Ramban
AND I WILL TAKE YOU TO ME FOR A PEOPLE. That is, when you will come to Mount Sinai and you will accept the Torah. There, [at Mount Sinai], it was said, Then ye shall be Mine own treasure.41Further, 19:5.
Ibn Ezra
And I will take you, when they receive the Torah on Mount Sinai.
Sforno
ולקחתי אתכם לי לעם, this will occur at the revelation at Mount Sinai.