As Eve was deceived
Paul compares false teaching in Corinth to the serpent's deception of Eve. He warns that their minds could be led away from devotion to Christ.
I am jealous for you with a godly jealousy. For I promised you to one husband, to present you as a pure virgin to Christ. I am afraid, however, that just as Eve was deceived by the serpent’s cunning, your minds may be led astray from your simple and pure devotion to Christ. For if someone comes and proclaims a Jesus other than the One we proclaimed, or if you receive a different spirit than the One you received, or a different gospel than the one you accepted, you put up with it way too easily.
Genesis 3 records the serpent's words and Eve's statement that the serpent deceived her. Second Corinthians 11:3 names that deception and applies it as a warning to the Corinthian believers.