Some background for those unfamiliar with the teachings of Abraham-Hicks.

Abraham is a non-physical entity (pure source energy consciousness, infinite intelligence) channeled by Esther Hicks. 

My first conversation with Abraham, you see Esther Hicks briefly speaking as herself when she initially comes out to greet the audience. The video then skips forward a few minutes and Esther is now channeling Abraham. (You may notice a subtle difference in her personality).

When Esther channels Abraham they speak in plural ('we', 'us') because they identify themselves as a collective consciousness. At the workshops, participants with questions raise their hand to be selected for a conversation with Abraham.  Abraham selects participants - not randomly - but energetically. 

Here is how Abraham describes who they are: 
"Abraham is not a singular consciousness as you feel that you are in your singular bodies. Abraham is collective consciousness. There is a stream or river of consciousness. As one of you asks a question, there are many, many points of consciousness that are funnelling through what feels to be one perspective, (because there is, in this case, one human, Esther, who is interpreting or articulating it) so it appears singular to you. We are multidimensional and multi-faceted and, certainly, multi-consciousness."
Excerpted from Kansas City workshop on 8/29/99

From time to time, Abraham also refers to Jerry who is Esther's late husband, who passed away in 2011.