Numbers 26 - This is the second numbering of Israel's fighting men. What's happened in between the two numberings is basically the forty years of wandering in the wilderness. This is one of those elements of Bible study: to be aware of the chronology and the order of events recorded in various books. Our chronological reading doesn't always emphasize a change in either location or, especially, in time. Literally, from Numbers chapter 13 to chapter 19 the Israelites have seen all those who were listed in the first numbering die. Those in this second numbering are the next generation of fighting men who will be going into the Promised Land.
Numbers 27 - The basic assumption in Old Testament inheritance is that the father's wealth would be passed on to his children, the majority going to the eldest son. However, when a family has only daughters, as is the case presented in this chapter, then the inheritance is to pass to them. This is one of those passages in Scripture where you recognize God's concern for women and He makes sure they are fairly treated.