A better question is what a "blessing" is. The basic meaning is "divine favor"-- and Christ's beatitudes need to be understood in this light. But what is the practical meaning of wishing or,better, conferring a blessing?
Lloyd, a personal friend, shared this testimony with me. His friend F was an atheist who had no interest in religion. One day F was walking through a crowded mall, when he inadvertently bumped into a lady, who touched him to brace herself for the accidental contact. F apologized, the lady smiled, and they went their separate ways. Oddly and wonderfully, by the end of the day F fell under conviction and committed His life to Christ! '
Many years later, F saw a photo of faith healer Kathryn Kuhlman and was amazed to realize that she was the woman he had jostled that fateful day long ago. Well, Kathryn Kuhlman is a virtual blessing machine. In 1969 I attended 2 of her meetings at the famed Los Angeles Auditorium, the former site of the Academy Awards. My Aussie friend Sam and I snuck onto the stage where about 60 pastors were seated, though technically we didn't qualify because we were only Fuller Seminary students. A few minutes into the meeting, Kathryn wheeled around and looked at all of us on the stage and joked, "Have you ever seen such a dead bunch of pastors? They need a blessing!"
To my horror, she started at the far end of the stage and gently touched each pastor on the forehead. Every pastor thus touched acted like he was electricuted! They all fell off their chairs and landed prostrate on the floor! After she "zapped" about 55 of us , I was hoping she wouldn't zap me. But Kathryn sudden stopped, and her discernment prevented her from zapping Sam and I--and about 3 other guys. I was impressed by her spiritual discernment of my fear.
I later learned that a fellow seminarian had cornered her for a conversation. during which she had inadvertently touched him in a random gesture. Well, though he was a large college ex-football player and a stolid Presbyterian, not into this charismatic histrionics, he fell too prostrate as if electricuted!
In any case, Lloyd's friend F later attributed his unlikely conversion to the blessing of her touch. Some evangelical churches organize their people into teams who walk their neighborhoods street by street to "bless" each home and business establishment on their routes. What a wonderful application of Jesus' teaching on the act of blessing!