One of the most important factors of the desire and attraction 
towards sincerity is to know its features and characteristics and 
also to remove the obstacles that can hinder the way to reach 
this great moral virtue. And what greater and more 
magnificent virtue can be counted than sincerity, which 
Amirul Momineen (AS) mentions as the perfection of 
monotheism. And unfortunately, today we are not paying 
attention to this valuable virtue in its deep and valuable 
meaning. Sincerity at its highest level, which Allameh 
Mohammad Taqi Jafari refers to as a valuable sincerity, and 
the cause of very valuable consequences that make the highest 
moral talents of man flourish and actualize, and will be the 
source of works and blessings in man's existence that will lead 
him to Reasonable life guides and its effects can be 
crystallized in the direction of the elevation of man in all the 
moral aspects of life. Examining the consequences and 
positive and constructive effects that grow man in the path of 
creation and elevation of human personality and enriches the 
essence of human excellence. . The general purpose of this 
research is to express the views of Allameh Mohammad Taqi 
Jafari regarding the effects and consequences that will arise in 
the case of the growth of sincerity in human beings, as well as 
the factors that, from Allameh Jafari's point of view, can 
prevent the achievement of sincerity. The qualitative approach 
and its result show the most important and general 
consequences of the moral virtue of sincerity, as well as the 
most important obstacles to achieving it in the thought of 
Allameh Mohammad Taghi Jafari.