Numbers 5:11 to 5:31 uh, fairly clearly explains that if a woman is suspected to be pregnant by 'not her husband', she is to undergo a ritual and drink a potion which will cause an abortion/miscarriage.

https://biblia.com/bible/esv/numbers/5/11-31

ESV uses a ... too literal translation to result into 'her thigh will fall away'...

https://biblia.com/bible/niv2011/numbers/5/11-31

But the NIV translators are capable of understanding context dependent modifiers and just directly uses 'miscarry'.

https://biblia.com/bible/nlt/numbers/5/11-31

NLT ends up with 'womb will shrivel/shrink'.

https://biblia.com/bible/nkjv/numbers/5/11-31

NKJ also goes for a very, word by word literal approach (what a surprise) and says 'thigh will rot'.

...

So yeah, there you go, anytime you run into a bible thumper who proclaims that the ten commandments are the basis of western civilization, show them that the old testament also very clearly and explicitly ... not just condones, but mandates abortion in certain circumstances.

If they then say that we are under the new covenant, throw this at them:

https://biblehub.com/matthew/5-18.htm

Matthew 5:18

Jesus, the man himself, says to follow the Law (ie, the old testament, or at the very least the first 5 books, the torah, which includes the entire book of numbers) exactly, precisely, to the letter, to the 'jot and tittle'.

... Oh but also the Bible is inerrant and never contradicts itself, which must mean the old and new covenant have perfect agreement and never contradict, and are therefore identical, right?