[daniel1212]

And when the days of her purification according to the law of Moses were accomplished, they brought him to Jerusalem, to present him to the Lord;" (Lk. 2:21-22 AV).

This ceremonial law is due to defilement by woman's blood and perhaps other secretions, (Lev_12:1-4 cf. 15:19,33; 20:18) and which indicates normal delivery. Christ coming by water and blood in 1 Jn. 5:6 - versus Gnostic ideas - likely refers to His human birth.

[MHGinTN]

1 John 5:7 For there are three witnessesc — 8 the Spirit, the water, and the blood—and these three are one.

[imardmd1]

Yes, you're getting the idea. In fact, it is because Mary observes these ordinances that we know the normal process of birthing took place, since the very definition of the words for "open"--as referring to the womb--have the same interpretive value when translated from ancient Hebrew into Koine, or from either into Elizabethean or modern English.

Your comment here anticipates a continuation of the rather lengthy summary that I have been making, but have not yet posted.

One matter worthy of further emphasis is that the "opening of the womb/matrix" refers only to the inauguration of child-bearing, not any successive births; and when it yields a male, the law demands the offering of a lamb yearling: not for sin, but as the price for redeeming the firstborn by a substitutional blood-sacrifice. The law permits a dove or pigeon instead of the lamb for someone who is very poor.

That is why Mary needed two doves, one culminating the purification, and the other as the redemption price for her firstborn, a male.