Some Ans. Questions 2014 by -'Abdu'l-Bahá- 1 Para

Thus it is evident that the dove which descended upon Christ[69] was not a physical dove but a spiritual condition expressed, for the sake of comprehension, by a sensible figure. For example, in the Old Testament it is said that God appeared as a pillar of fire.[70] Now, that which is intended is not a sensible form but an intelligible reality that has been expressed in such a form. (16:6) com1

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