'Blessed' 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.”

David said to Abigail, “Blessed be the Lord, the God of Israel, who sent you to meet me this day.

And blessed be your discretion and discernment, and blessed be you, who has kept me from bloodshed this day and from avenging myself by my own hand.

When David heard that Nabal was dead, he said, “Blessed be the Lord, who has pleaded the cause of my reproach [suffered] at the hand of Nabal and has kept His servant from [retaliating with] evil. For the Lord has returned the wickedness of Nabal on his own head.” Then David sent word to Abigail, proposing to take her as his wife.

Then Saul said to David, “May you be blessed, my son David; you will both accomplish much and certainly prevail.” So David went on his way, and Saul returned to his place.