Exodus 16:22

לקטו לחם משנה THEY COLLECTED DOUBLE BREAD — when they measured in their tents what they had gathered they found it double — two Omers for each person (cf. Rashi on v. 5). (Rashi appears to supply אשר before לקטו: It came to pass on the sixth day, what they gathered אשר לַקטו, was double bread.) A Midrashic explanation is that משנה in לחם משנה signifies מְשֻׁנָּה different, changed, — that day it was changed for the better as regards its smell and its taste (Tanchuma Yashan). ויגידו למשה AND THEY TOLD IT TO MOSES — They asked him, “How is this day different from other days?” — From this we may learn that Moses had not yet told them the section regarding the Sabbath which he had been commanded to say to them: (v. 5) “And it shall come to pass on the sixth day they shall prepare etc.” — he did not do this until they asked him, “What is this?” Then he said to them, (v. 23) “This is that which the Lord hath said” this is that which I was commanded to say to you previously, but I forgot to do so (Cf. Shemot Rabbah 25:10). On this account Scripture (God) punished him, in that He said to him, (v. 28) “How long will ye refuse [to keep my commandments]”, and He did not exclude him from the general body, by saying, “how long will they refuse etc.”

וַיְהִ֣י ׀ בַּיּ֣וֹם הַשִּׁשִּׁ֗י לָֽקְט֥וּ לֶ֙חֶם֙ מִשְׁנֶ֔ה שְׁנֵ֥י הָעֹ֖מֶר לָאֶחָ֑ד וַיָּבֹ֙אוּ֙ כׇּל־נְשִׂיאֵ֣י הָֽעֵדָ֔ה וַיַּגִּ֖ידוּ לְמֹשֶֽׁה׃

And it came to pass, that on the sixth day they gathered a double provision, two ῾omer for one man: and all the rulers of the congregation came and told Moshe.