Solid Patristic Advice

Wherefore, a good Christian ought to beware of mathematicians, or
of anyone who impiously divines, especially of those speaking the truth.

Augustine, De Genesi ad Litteram, Second Book,
Seventeenth Chapter, Thirty-Seventh Paragraph

Those impostors, then, whom they designate mathematicians, used
no sacrifices and invoked the aid of no spirit for their divinations.

Augustine, The Confessions,
Fourth Book, Third Chapter