they appear to be very confused about the whole -life beginning at conception- thing.
I think a strong argument can be made against the “life begins at conception” belief, one that meets both a scientific and a religious standard fully in keeping with Christian values. Leave a fertilized egg alone and it will not turn into a baby. It will not live. Instead it will wither and die due to a lack of vital nutrients and hormones all necessary for growth.
Given that eggs, both fertilized and unfertilized can be passed out of a woman’s body without producing life what are the circumstances that lead to life? Only when that fertilized egg attaches to the uterine wall whereby those nutrients and hormones can be supplied does life begin. This occurs about 7 days after conception. When would God send a spirit to this little baby - at conception when it cannot sustain life or at this point when life can be sustained?
The argument that “life begins at conception” is unscientific. It also fails to meet the basic understanding of God and the nature of this world. If one moves away from “conception” and toward implantation you have a sustainable argument.