1) Ch. 30, v. 2: "Zeh hadovor" THIS is the matter Rashi says that Moshe and other prophets prophesied with the expression "koh." ADDITIONALLY, Moshe prophesied with the expression "zeh hadovor." One would have thought that this most important point of information would be conveyed to us either at the beginning of Moshe's career as a prophet (according to those who posit that he had this level immediately), or at least at the receiving of the Torah. Why does the Torah wait until specifically this point to give us this information?
2) Ch. 30, v. 6: "Kol n'do'rehoh ve'eso'rehoh" All her vows and her prohibitions The words "kol n'do'rehoh" appear by the father's approving and by his annulling his daughter's vows. By the husband this term is only found by his abstaining/approving. Why the difference?
3) Ch. 31, v. 4: "L'chol matos Yisroel" For all the tribes of Yisroel Rashi comments that these words teach us that even the tribe of Levi sent soldiers. The question is obvious: If so, why does the next verse say that 12,000 were sent when it was 13,000?
4) Ch. 31, v. 8: "V'es Bilom ben B'ore HORGU becho'rev" And Bilom the son of B'ore THEY killed with the sword Targum Yonoson ben Uziel gives us a lengthy account of how Bilom was killed by Pinchos. Bilom made use of a negative spiritual power to propel himself and others who were attempting to escape the bnei Yisroel, into the air. Pinchos took flight after him by using the power of a Holy Name. When he caught up to Bilom, Bilom pleaded with him to be spared, and he would onwards only sing the praises of the bnei Yisroel. Pinchos refused, saying that Bilom was the cause of much sinning and death. He then killed Bilom with a sword.
What remains to be explained is the plural form "horgu," THEY killed, as it was only Pinchos.
5) Ch. 31, v. 10: "V'eis kol o'reihem b'moshvosom" And all their cities in their residences How do we explain this seeming double-talk?