1) Ch. 19, v. 23:"Vatomos shom Miriam" And Miriam died there This verse follows immediately after the chapter of"poroh adumoh." Psikta Zut'r'sa 16:2 derives from this that just as"poroh adumoh" brings atonement (This is derived from the words"chatos hee" in verse nine.), so too, the death of the righteous provides atonement. The gemara Mo'eid Koton 28a says that the death of Aharon's two sons, Nodov and Avihu, although it took place at the beginning of the month Nison, is recorded next to the Yom Kippur services to teach us that just as Yom Kippur offers atonement, so too, does the death of the righteous. The question arising from these two statements is obvious. Why is there a need for two sources for the same point?
2) Ch. 20, v. 3:"Bigva acheinu" In the death of our brethren Who were their brothers?
3) Ch. 20, v. 5:"Lo m'kome zera" Not a place of sowing Tosfos on the gemara Chulin 88b d.h."ela" writes that when the bnei Yisroel were in the desert plants grew. If this were so why did they complain that this was not a place of sowing?
4) Ch. 20, v. 8:"V'nosan meimov v'hotzeiso lo'hem mayim" And it will give forth its waters and you will extract for them water Why the double expression?
5) Ch. 21, v. 5:"V'nafsheinu kotzoh b'lechem haklokeil" And our soul is disgusted with this negligible bread Rashi says that the bread was considered negligible because it was totally absorbed into the body, with no waste expelled. They complained,"The manna will swell in our intestines. Can a human being take in and not have output?" This is most puzzling. They existed this way for close to forty years!