First century Jews were decidedly pro-life.
So were first century Christians.
Read the Didache
CHAPTER 2
2:1 But the second commandment of the teaching is this.
2:2 Thou shalt not kill; thou shalt not commit adultery; thou shalt not corrupt youth; thou shalt not commit fornication; thou shalt not steal; thou shalt not use soothsaying; thou shalt not practise sorcery; thou shalt not kill a child by abortion, neither shalt thou slay it when born; thou shalt not covet the goods of thy neighbour;
Note the link of abortion with infanticide.