Imam explains the matter in his famous book of "Combat with the Self" as following:
God forbid that a man, due to the multitude of his sins he should be expelled and blocked from the presence of God the Almighty, and that he should be bereft of the divine mercy, so that there is no other way for him to remain forever in the fire of hell.
God forbid that you should be bereft of divine mercy and blessings, and that you should be subject to His wrath, anger and chastisements. May your deeds, behavior and speech not be the means to the denial of grace, so that there is no way for you but eternal damnation.
Of course, you are not to be nice to sinners with regard to their sins and rebelliousness.
Tell him to his face of his ugly deeds and wrongdoing, and prohibit him from it, and keep yourselves from promoting anarchy and from rebellion.
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Behave well with the servants of God and the righteous.
Show respect to the learned with regard to their knowledge, to those on the path of guidance with regard to their virtue, and to the ignorant and unlearned, for they are also the servants of God, Imam further explains
Have good behavior; be kind, honest and brotherly.
Refine yourselves. You want to refine and guide the community, but how can one who is not able to reform and manage himself guide and manage others? Now there are only a few days left in the month of Sha‘ban, so try in these few days to repent and reform yourselves, and enter the blessed month of Ramadan with a healthy soul.
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