'Blessed are' in the Bible

Blessed is he who reads and blessed are those who listen to the words of this prophecy and lay to heart what is written in it; for the time for its fulfillment is now close at hand.

And I heard a voice speaking from Heaven. It said, "Write as follows: "'Blessed are the dead who die in the Lord from this time onward. Yes, says the Spirit, let them rest from their sorrowful labours; for what they have done goes with them.'"

And he said to me, "Write as follows: 'Blessed are those who receive an invitation to the Marriage Supper of the Lamb.'" And he added, still addressing me, "These are truly the words of God."

Blessed are those who wash their robes clean, that they may have a right to the Tree of Life, and may go through the gates into the city.