Unit 1 (v. 5a): Daughter born
The verse begins by stating the condition that triggers this schedule: if the woman gives birth to a female child. The rest of the verse explains what follows from that one circumstance.
Unit 2 (v. 5b): Two weeks “unclean,” compared to monthly impurity
The text says she is “unclean” for two weeks, and it compares this to “her impurity,” pointing back to the kind of uncleanness associated with her menstrual period. The comparison indicates the same category of condition, but it specifies a different length.
Unit 3 (v. 5c): Sixty-six more days in “blood of her purifying”
After the two-week period, she remains in a second phase for sixty-six days, described as continuing “in the blood of her purifying.” The wording ties this time to ongoing postpartum bleeding and a process moving toward completion.
Unit 4 (v. 5 total): The adjusted timeline
The two stated periods (14 days and 66 days) create a total of 80 days. The verse does not yet describe what changes at the end; that comes as the chapter continues beyond this verse.