1) Ch. 7, v. 12,13: "V'hoyoh eikev tish'm'un, U'veirach pri bit'n'cho u'fri admo'secho" And it will be as a result of your listening, And He will bless the fruit of your womb and the fruit of your land The gemara Mo'eid Koton 28 says that one's success in having children, a livelihood, and life, are not dependent upon one's merits, but rather, on "mazel." Don't our verses seem to say otherwise, that when one follows Hashem's dictates he will be blessed with these matters?
2) Ch. 7, v. 15: "V'heisir Hashem mimcho kol choli v'chol madvei Mitzrayim horo'im asher yodato lo y'simom boch" And Hashem will remove from you all sickness and all bad afflictions of Egypt which you have known He will not place in you If you will not have these sicknesses what need is there to remove them?
3) Ch. 7, v. 15: "Kol choli v'chol madvei" All sickness and all afflictions What is the difference between these two words?
4) Ch. 8, v. 1: "Kol hamitzvoh asher onochi m'tzavcho l'maan tichyun" Every mitzvoh that I command you so that you may live The verse begins in the single form "m'tzavchO" and ends in the plural, "tichyUN."
5) Ch. 10, v. 21: "Asher ro'u ei'necho" Which your eyes have seen The main point is that Hashem has done great wonders. What is added with saying that you witnessed this with your eyes?