When is the soul joined to the human body?
It doesn’t really matter because no one has ever actually seen a soul. Arguing about things that cannot be known is a waste of time.
You DO know, doncha, that the belief of "ensoulment" upon birth is what allowed Bill Clinton to slide away theologically and embrace abortion?
Back in the 1990s, one of the major mags (think it was TIME mag) mentioned how Clinton went to a Little Rock Baptist church, whose pastor believed that ensoulment took place at birth...and therefore opened the door for Bill to embrace abortion.
The Bible mentions how God knew both Jeremiah and the apostle Paul BEFORE they were born. And anybody reading the "ME" in Psalm 139 can't readily embracement birth ensoulment nonsense.