you shall set apart to the LORD all that first opens the womb. All the firstborn of your animals that are males shall be the LORD’s.
The firstborn of clean beasts must be sacrificed, and the unclean redeemed with a lamb or destroyed; whatever is unclean by nature, unredeemed, will be destroyed. Your children are polluted too and must be redeemed by blood, that they may belong to the Church of the Firstborn, just as you were delivered by God's hand from the destroying angel.
AI summary
Commenting on Exodus 13:11-16
To set apart means to separate from your own power and use, making it wholly the Lord's. Every firstborn male of man and beast is to pass into His ownership alone; the females are exempt, and only clean creatures such as cattle, sheep, and goats are included.
AI summary
The firstlings of clean beasts, lambs, kids, and calves, if male, were devoted to God for sacrifice. Unclean beasts like the ass's colt, being unfit for sacrifice, were redeemed instead.
AI summary