I've been working on the song "B-I-B-L-E" with Monkey and pointing at the letters as a way to help him begin to identify some new letters. He loves it, especially the part where you yell "BIBLE" at the end.
The other day his therapist was working on an alphabet puzzle with him and lined up the letters "A-B-C-D-E-F". She pointed at each letter and said them to him. When she was done saying the letters he proudly exclaimed "BIBLE".
So maybe he doesn't quite get it yet.