The first two letters of ''bereshith'', when using the invisible aleph, spell 'Father'. We discern from this that "from the beginning, no man has seen the בFatherFather". The word ''ab'' cannot be seen because of the invisible aleph. It is an intentional allegory to teach the doctrine. The nature of a Father is that he gives life. We discern this from the other words which are spelled the same as 'Father'. A green shoot is called ''ab'' as evidence of the first life that the Father gave. It is like pointing to the unique footprint of the Father in the sand and saying "Father" to acknowledge that he passed this way. The fruit on a tree is also the word ''ab'' referring to evidence of the Father giving the second life.