“How was Saul able to call Samuel through the witch of Endor?”
He didn’t. It was a “familiar spirit,” a demon posing as Saul.
Note this scripture:
1Sa_28:15 And Samuel said to Saul, Why hast thou disquieted me, to bring me up? And Saul answered, I am sore distressed; for the Philistines make war against me, and God is departed from me, and answereth me no more, neither by prophets, nor by dreams: therefore I have called thee, that thou mayest make known unto me what I shall do.
“Why hast thou disquieted me, to bring me up?” The implications are blasphemous, as if a wicked human being can call up saints who are resting in the bosom of Abraham at will.
To use this as proof of Catholic theology is.... well, actually, it makes perfect sense, as praying to the dead, who cannot possibly hear all these millions of prayers every day without being omnipresent and omniscient, is also an act of blasphemy.
Oops, I said “demon posing as Saul.” Meant “Demon posing as Samuel.”