There is a word used frequently of Paul’s preaching in the book of Acts and it is translated variously: Paul “reasoned with them from the Scriptures” (Acts 17:2; cf. 17:17; 18:4, 19; 19:8-9; 24:25); “disputing” (24:12); “preached” or “discoursed” or “talked with them” (20:7, 9). The Greek word fundamentally meant “to 
reason, to argue, to dispute, to revolve in the mind, to teach with the method of question and answer, always with the idea of intellectual stimulus” (Robertson), and it involved “preaching and teaching that harnesses reason and logic into a defensive and positive exposition of God’s Word to persuade and edify” (Mounce).
This method cannot be employed with some subjective topic that is filled with conjecture and opinion! (That would be like trying to pick up jello with your fingers and passing it around in a group setting for personal examination!) Objective truth is reasonable and can be reasoned logically and intellectually, in order that a very conclusive case might be presented for one to accept, believe and act upon! Teaching God’s Word is much more than just talking! It involves and requires a precise, reasoned presentation of Truth that can “revolve” in one’s mind!