abortion became a hot issue for the religious right in the USA in the 1990s
American evangelicals amongst others have always been opposed to abortion, this didn't start with the liberalisation of abortion laws.You didn't really hear of Roe v Wade being challenged until Trump took power.
There is an uncomfortable amount of truth in this, but I wouldn't make the mistake of applying this to all, nor that many pastors are more thoughtful about this than you might think. They are somtimes the last port of call for those who have messed up, including but not confined to this particular issue.The evangelical Christian right were/are vote-fodder for populist Republicans....
Morality doesn't change with time - at least not if there are absolutes. The Old Testament doesn't refer to abortion because it was completed before abortion was mentioned in history (500BC). Abortion was current in the Roman Empire, but the New Testament doesn't directly mention it either.Do we have to drag what some (patriachal) religion, said yay or nay in their book however so long ago, into this..
If abortion were analagous to having your appendix out there would be no debate about it. The question at issue is when does human life begin. At conception or later, and if so, when? Is the unborn child a human being, even if literally embryonic in form.
Biblically the answer is life begins at conception, and the obvious implications of this are why American evangelicals feel so strongly about it. The need to speak for those who have no voice. There is no change in the child's status at birth, and a right to life exists before and after. Arguing for the sanctity of life is not bigotry.
You can argue this scientifically as well - from the get go the unborn is another human being. Ultra scans make this only too visible. Independent heart and circulation, if you grafted skin from the baby onto the mother she would reject it.
This means that arguments about whether a woman has a right to bodily autonomy are irrelevant. That's not the issue. It's another person inside her body.
Sex is designed to create new life, and engaging in it implicitly means consent has been given for this to happen, there is a responsibility involved for both mother and father if conception occurs. The choice has already been made. There is no right to end that new life.
Now there are circumstances that despite the above where an abortion may be necessary. Incest or rape, genuine medical needs of the mother. Abortion is never good, but sometimes necessary. I don't agree with those who make it absolutely morally wrong, but I'm not sure there are many who do.