Why is a woman to give a SIN offering after giving birth?
I get that because blood is involved in giving birth which can be a spreader of disease she is considered "unclean", like with the male who has a wet dream being considered unclean... but for the male having a wet dream, he's only to wash up, no sin offering is required.
The defilement laws--unclean food, persons, garments and houses, were not about actual sin, but as in all the ceremonial laws, they were pictures, types, patterns of spiritual reality. The defilement laws were to demonstrate the nature of sin--
spiritual defilement, requiring cleansing.
Childbirth being defiling would be a good way to show the corruption of the fallen nature that is produced in childbirth, to show that we are
born defiled (in sin)--
Psalms 51:5;
Ephesians 2:3;
Colossians 2:13.
Jesus and Mary were required to go through the purification ceremony, even though Jesus was not born in sin (
Luke 2:22-23), because Jesus submitted to all of the law (
Matthew 3:15).
And a remarkable pattern of the gospel can be seen here in
Luke 2:23: "Every
firstborn male is to be
consecrated to the Lord."
God
bought back (redeemed) from the destroying angel all the
firstborn of Israel, both men and animals, in the tenth plague (
Exodus 12:21-29).
Because God
purchased them from death, they were his by right (
Exodus 13:2,
Exodus 13:12-15,
Exodus 13:22-29). Therefore,
1) firstborn
animals were consecrated (given over to God) by
sacrifice (
Exodus 13:15), unless it was an
unclean animal, which was then either
redeemed (bought back)
or destroyed (
Exodus 13:13,
Exodus 34:20), and
2) firstborn sons were
consecrated to God for full-time service to him (
Exodus 13:2).
3) God then
substituted the Levites and their livestock for consecration to his full-time service
in place of the firstborn sons of Israel and their firstborn animals (
Numbers 3:9-13, 41, 44-51, 8:15-19), and then
gave to the Levites his
right to
ownership of all firstborn males, both men and animals (
Numbers 18:14-15).
4) Therefore, all the
firstborn sons of Israel had to be bought back (
redeemed) from the Levites for five shekels of silver (
Exodus 13:13, 15, 30:16, 34:20;
Numbers 18:15-16), being a
Picture, pattern of the church of the
firstborn (
Hebrews 12:23),
1) who have been
delivered from the destroying angel (Satan,
1 Peter 5:8;
John 10:10) and
bought back (redeemed) from eternal
death (
Ephesians 2:1,
Ephesians 2:5;
Colossians 2:13)
by Christ, our priest (Levite), who was
substituted for
us (
Matthew 20:28), and
2) to whom God has exclusive right by purchase (
1 Corinthians 6:20,
1 Corinthians 7:23; Acts 20:28b;
1 Peter 2:9;
Revelation 5:9,
Revelation 14:4),
3) and who, therefore, are to be
consecrated to the Lord (
Romans 6:13;
2 Corinthians 5:15), and a
Picture, pattern of the
destruction of all the
unclean (i.e., unbelievers) who are not redeemed/consecrated (
John 3:18,
John 3:36;
Hebrews 12:14),
Both pictures being the
gospel.
God redeemed us for consecration and holiness. (
Titus 2:14;
1 Thessalonians 4:3-8;
2 Thessalonians 2:13;
1 Corinthians 6:20.)