The pride of your heart has deceived you, Obad 3
I know people who are dogmatic about their knowledge; believing their information is absolutely correct and resisting any attempt to disprove them.
Nothing is wrong about this unless something they believe is false.
Refusing to believe the truth because you believe otherwise is pride. Allowing pride to deceive you because you do not want to believe differently is the ultimate deception.
Many will not accept Jesus as Savior because pride does not allow them to for a variety of reasons.
Perhaps it’s the belief in the comparison of the good and bad in their life and the good will out-weigh the bad.
Maybe they believe in a second chance after death or just attending church every now and then is sufficient.
When God’s word says different, it is the pride of their heart that deceives them and keeps them from salvation.