'Blessed are' in the Bible

So Samuel came to Saul, and Saul said to him, “Blessed are you of the Lord. I have carried out the command of the Lord.”

And Saul saith, 'Blessed are ye of Jehovah, for ye have pity on me;

Your discernment is blessed, and you are blessed. Today you kept me from participating in bloodshed and avenging myself by my own hand.

Then Saul said to David, "Blessed are you, my son David; {you will not only do many things, but also will always succeed}!" Then David went on his way and Saul returned to his place.