Okay, so @Sloth is referring to what ultimately boils down to the ‘Moral argument for the existence of God’. The crux of which is that God is the ‘law’ giver (not in the biblical sense), which means He is the ultimate source from which objective morality is derived which in turn means that anything God does is moral by default. However, that’s my interpretation of what @sloth is saying, it’s backed up by the Catechism and has its founding in the teaching of early Church fathers clarified by St. Thomas Aquinas and later by Kant. (Yes, I am dead-naming). But take Sloth’s word for what he is saying, not mine, to be clear.
So looking at Num 5:16-28, what it is ultimately is a purity test, one that unless there is direct divine intervention, would never actually work. I think that may have been by design to deal with overly-jealous husbands or those looking for an excuse to get away from their nagging wives.
So the result of this purity test is stated here:
" he water that brings the curse shall enter into her and cause bitter pain, and her womb shall swell, and her thigh shall fall away, and the woman shall become a curse among her people.
But if the woman has not defiled herself and is clean, then she shall be free and shall conceive children."
It does not say specifically it would end a current pregnancy, necessarily, though the swollen womb and great pain may indicate such a thing is possible, but it does not say it will terminate a current pregnancy outright. So, it says the bitterwater (whatever that was) would pass into her bowls and cause her womb to swell. Perhaps to mean she would have a raging case of the runs, we don’t actually know. It would also, by means of curse, cause her thigh to fall away… That’s one heavy duty curse…
So in the absence of those things happening, the woman passes this purity test and she can go on having babies and living life. If she fails, then she will be cursed to being barren and her thigh hanging off like a half eaten chicken wing. Seems reasonable that no guy would care to fuck a woman with a fucked up thigh…
As far as the bitterwater, well we don’t know what that is. It indicates vaguely that grain is involved, causing it’s bitterness, but it also has to be survivable lest the innocent suffer with the rest.
It is possible, that some priests made a vile concoction that is in fact an abortifacient, but that’s outside the letter of the law.
So, based on the scripture, it’s not abundantly clear that God was recommending abortion in the failure of the purity test. There is no indication to suggest that’s what it was for. Just a test, requiring divine intervention, to indicate whether or not your wife is a lying, cheating whore.
And in the case where the curse is in fact, invoked. It’s possible that a child en utero is miscarried, but if the priest is following the written prescription, nothing of man’s own action should cause it, it would be an act of God.
That’s why it’s not a passage promoting or allowing abortion.
(Deuteronomy 28:37; Jeremiah 24:9; Jeremiah 29:18; Jeremiah 29:22; Jeremiah 42:18; Jeremiah 44:12; Zechariah 8:13 - And you shall become a horror, a proverb, and a byword amon… | ESV.org)