According to the author of 1 Chronicles, this verse is like a family tree, showing the names of fathers and their sons, which is important because it helps us see how God's people are connected through families. It teaches us that families and ancestors were important for keeping their history and beliefs alive.
1 Chronicles 6:51: Bukki his son, Uzzi his son, Zerahiah his son,
This verse lists a different set of cities given to the sons of Aaron than what is mentioned in 1 Chronicles 6:51.
1 Chronicles 6:66: And [the residue] of the families of the sons of Kohath had cities of their coasts out of the tribe of Ephraim.