Some Ans. Questions 1908 by -'Abdu'l-Bahá- 1 Para

But acquired infallibility is not a natural necessity; on the contrary, it is a ray of the bounty of infallibility which shines from the Sun of Reality upon hearts, and grants a share and portion of itself to souls. Although these souls have not essential infallibility, still they are under the protection of God-- that is to say, God preserves them from error. Thus many of the holy beings who were not dawning-points of the Most Great Infallibility, were yet kept and preserved from error under the shadow of the protection and guardianship of God, for they were the mediators of grace between God and men. If God did not protect them from error, their error would cause believing souls to fall into error, and thus the foundation of the Religion of God would be overturned, which would not be fitting nor worthy of God (172:1)

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