Numbers 12:14

Spit in her face, i.e. expressed some eminent token of indignation and contempt, which this was, Job 30:10 Isaiah 1:6. Should she not be ashamed, and withdraw herself from her father's presence? as Jonathan did upon a like occasion, 1 Samuel 20:34. So though God healed her according to Moses's request, yet he would have her publicly bear the shame of her sin, and be a warning to others to keep them firm the same transgression. Seven days, the time appointed for cleansing the unclean. See Numbers 6:9, Numbers 31:19.