What is Bless ?
Bless is (verb) 1. to make holy by prayers, etc. The church was blessed by the bishop. 2. to bring happiness or good things to someone or something Their marriage was blessed with two fine sons. bless you said when someone sneezes Bless you! 3. I’m blessed, I’ll be blessed showing surprise (dated.) (NOTE: [all senses] blessing blessed )
source: Easier English, Student Dictionary Upper Intermediate Level