The morality of this law obliges women who have received mercies from God in child-bearing, with all thankfulness to acknowledge his goodness to them, owning themselves unworthy of it, and (which is the best purification) to continue in faith, and love, and holiness, with sobriety.
Related Commentaries of Leviticus 12:8
Leviticus 12:8
8 And if she be not able to bring a lamb, then she shall bring two turtles, or two young pigeons; the one for the burnt offering, and the other for a sin offering: and the priest shall make an atonement for her, and she shall be clean.