They had to make themselves ritually pure so they could worship in the temple. (See: [[rc://en/ta/man/translate/figs-explicit]])
# pay their expenses for them
"pay for what they will need." The expenses would go toward buying a male and female lamb, a ram, and grain and drink offerings. (See: [[rc://en/ta/man/translate/figs-explicit]])
# they may shave their heads
This was a sign that the person had completed what they promised God they would do. (See: [[rc://en/ta/man/translate/translate-symaction]])
This can be stated in active form. Alternate translation: "the things that people are saying about you" (See: [[rc://en/ta/man/translate/figs-activepassive]])