True doctrine, when comprehensively studied and understood, is logical, consistent. Truth is true precisely because it is not contradictory.
Often our difficulties with things stem more from a misunderstanding or shallow grasp of the material under consideration than from the matter itself.
Book knowledge means nothing if you do not apply it in your own life. Helps to deceive people though.
That's why Jesus also criticized the scribes: [Matthew 23:15] Woe to you, scribes and Pharisees, hypocrites! For you travel across sea and land to make a single proselyte, and when he becomes a proselyte, you make him twice as much a child of hell as yourselves.
And he also promised us the holy spirit:
[John 14:26] But the Helper, the Holy Spirit, whom the Father will send in my name, he will teach you all things and bring to your remembrance all that I have said to you.
Because faith needs the Spirit of truth to stay vivid.
nice