From the Catechism of the Catholic Church

Abortion

2270 Human life must be respected and protected absolutely from the moment of conception. From the first moment of his existence, a human being must be recognized as having the rights of a person - among which is the inviolable right of every innocent being to life.⁷²

Before I formed you in the womb I knew you, and before you were born I consecrated you.⁷³

My frame was not hidden from you, when I was being made in secret, intricately wrought in the depths of the earth.⁷⁴

Read the rest here.