'Blessed' in the Bible

When Samuel came to Saul, Saul said to him, "May you be blessed by Yahweh! I have kept the word of Yahweh."

And Saul said to them, "May you be blessed by Yahweh, for you have shown me compassion

Then David said to Abigail, "Blessed be Yahweh the God of Israel who has sent you this day to meet me!

And blessed be your discretion, and blessed be you who have prevented me this day from bloodguilt and [from] delivering myself by my own hand.

When David heard that Nabal had died, he said, "Blessed be Yahweh who has vindicated the case of my reproach from the hand of Nabal, and he has kept back his servant from evil; but Yahweh has returned the evil of Nabal on his [own] head." Then David sent and spoke with Abigail to take her for his wife.

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.