“I’m guessing Catholics have so little knowledge on the scripture...”
Even if they did have knowledge of the Scriptures, it wouldn’t matter. My VERY Catholic friend said that they don’t believe everything in the Bible/Scriptures. Her husband trained for the priesthood. They said that if there’s a conflict between the Bible and a pope/priest, they go with the guy in a goofy hat every time. They must. That’s what they’ve been told to do.
You can’t have a logical theological discussion about Biblical doctrines with anyone in a cult. They always put man before God (that’s what makes it a cult), and don’t believe the Bible is the Final Authority. The only way they will see/know the truth is through the Holy Spirit working in their lives.
That is true; if there is an interpretation of the Holy Scripture that is at odds with the teaching of the Holy Church, then that interpretation is wrong and the Church can provide the correct one. That is plain logical since it is the Holy Catholic Church that, under the guidance of the Holy Ghost, produced the New Testament and canonized and explained the Old. This is why I, too, explain the Holy Scripture in the light of the Church teachings but do not engage in debates with Protestants about their theological fantasies, beyond pointing them out and occasionally making fun of them.