Bible's Puzzling Nistarot Lines

Jesus had a secret language, he was always speaking in code, but why were the parables so complicated that the disciples had to constantly ask Jesus to explain them? You would think it would be straightforward, but it turns out that it's not that easy after-all. The apostle Paul had that same understanding/knowledge, and like Jesus, he too was often misunderstood. It was not because Paul lacked as a teacher, but simply because it appears that the writings were intentionally desiged to be cryptic.