וַיָּכִ֙ינוּ֙ אֶת־הַמִּנְחָ֔ה עַד־בּ֥וֹא יוֹסֵ֖ף בַּֽצָּהֳרָ֑יִם כִּ֣י שָֽׁמְע֔וּ כִּי־שָׁ֖ם יֹ֥אכְלוּ לָֽחֶם׃
I przygotowali dary, zanim nadszedł Josef w południe; gdyż słyszeli, iż tam jeść mieli chléb.
Rashi on Genesis
ויכינו means AND THEY MADE READY — they laid it out ornately in fine vessels.
Rashbam on Genesis
ויכינו את המנחה, while the produce had been wrapped in the sacks on the way, it had suffered somewhat, and the brothers now tried to restore these items to the appearance of freshness.
Radak on Genesis
ויכינו, they arranged the gifts they had brought in a manner that would look appropriately impressive by the time Joseph would come home.