This Is My Faith - Al-fatlawi, Ali - الصفحة ١٤١ - Is Prophethood Divine’s Grace?
Hasan: Excellent inquiry. My answer will be what the scholar Al-Hilli – God bless his soul – said:
“Allah knows that people will not be obedient without grace. Even if He commands man using no grace, this would be against His purpose. It is like inviting someone for food and knowing in advance that this person will not accept without a polite request; the inviter has to use such manners with the invitee or it will be in disagreement with the purpose. Thus, the necessity for grace results in fulfilling the purpose”.
Anwar: It is said that sending prophets is for demonstrating the proof to mankind. What do you say?
Hasan: This is self-evident, because we all know that the Glorious Allah does not charge His slaves with anything unless He first provides concrete evidence before them, otherwise this would be injustice, and the Glorious Allah is far above it.
Anwar: You are right. I just remembered that the Glorious Allah says:
(… and We never punish until We have sent a messenger.)١٧-١٥.