I started out my discussion with a verse of the Qurʾan which states...
Each of these three ways of guidance must be used in their own specific instances. This verse tells us that we must call people to the way of our Lord. The word Lord (رب) is a special term meaning one who is responsible for upbringing and nurturing. Since this level of guidance is a level of invitation as well as upbringing and nurturing, the word used here is Lord (رب).
Therefore, we are told to invite people to the path of our Lord – the path which people must be nurtured and trained upon – but through what means? We must use wisdom (الحكمة). Wisdom is in the meaning of persuasive, firm speech which has neither marks of alteration in it, nor one in which doubts can occur. In the terminology of the people of logic and the philosophers, this is speech whose preamble is 100% based on pure certainty.
By this we mean that the people must be called to the path of the Lord with proof, wisdom and knowledge that is 100% pure and which is completely unadulterated. The commentators of the Qurʾan have mentioned that inviting people through the use of logical, intellectual wisdom, proofs and evidence is limited to one particular group of people who have the ability to make use of this method.
The second method is through good exhortation (والموعظة الحسنة) meaning that we must call the people to their Lord through good words, advice and warnings which their heart and soul will be in agreement with. There are some people who do not possess the ability to express their beliefs through the use of their intelligence and academic proofs, and if an intellectual issue is presented to them, they immediately become confused. Thus, the way to guide them is through good council and warnings.
Such people must be guided through employing stories, narratives and wisdom-based anecdotes and anything that would bring ease and comfort to their hearts.