'Monthly' in the Bible

“Speak to the children of Israel, saying,‘If a woman conceives and gives birth to a male child, she shall be [ceremonially] unclean for seven days, unclean as during her monthly period.

"When a woman has a discharge, and the blood is her monthly menstrual discharge from her body, then for seven days she is to remain in her menstrual uncleanness. Whoever touches her will remain unclean until evening.

"'If any man lies with her, and her monthly flow is on him, he shall be unclean seven days; and every bed whereon he lies shall be unclean.

"'If a man lies with a woman having her monthly period, and uncovers her nakedness; he has made naked her fountain, and she has uncovered the fountain of her blood: and both of them shall be cut off from among their people.