Answer: No, this has nothing to do with the corporeal body. This is said in a spiritual sense, when an infant is called a person who is ready to rise above itself and become included in the upper domain because one is completely ready to obtain the property of bestowal, the second property of the world that is concealed from us.
We live in the world of reception, absorption, swallowing, and capturing, and we have to cross over to the world of bestowal and fulfillment of others, to living in the desires of others.
If we can cross over to this system, then our first state there will be called a “spiritual embryo,” development in the form of the spiritual embryo. Then, once we completely reject our egoism, we will be able to see everything in this world from end to end.
From KabTV’s “I Got a Call. The World Through the Eyes of a Baby” 2/10/13