Generation, conception, and birth, not having anything sinful necessarily connected with them, the sin offering in this case is rather an intimation of original sin than an atonement for actual sin; the "sorrow" attached to childbirth being especially connected with the fall of man as a result of Eve's share in bringing it about (Genesis 3:16).
There is nothing in the Bible to countenance ascetic or Manichaean views of marriage intercourse. Where any prohibitory injunctions are given on the subject, the purpose is to avoid ceremonial, not moral, uncleanness (Exodus 19:15; 1 Samuel 21:4; cf.
Le 1 Samuel 15:18).