Taxonomy tag input

Forums: 

I really like your my note. I wish that there will be my tag. User can tag taxonomy terms on the verses. User can pick from existing terms or create new term to tag the passage. There should search API for taxonomy terms search. It is better with tree views (like taxonomy manager module).

Terms can be selected to tag the passage. 

It is better to be in a block so that user do not lost the view of bible page.