Because the Church uses the word "celibacy," it is somehow connected to the cult of Cybele? LOL! Reread your Bible, and you'll find Our Lord talks about those who "are eunuchs, who have made themselves eunuchs for the kingdom of heaven. He that can take, let him take it" (Matthew 19:12).
OED observes that celibate and celibacy are the only cognates of each other in Latin, whereas Webster's comes up with a really forced-sounding derivation - Sanskrit "kevala" alone + Old English "libban" living.
But switching the consonant sounds in "Cybele" doesn't seem convincing either.
mrs VS