The word transalated as blessed did not carry with it the idea of a future event, it was a state of being, in the moment. It wasn’t something to be given at a later time, a reward for an action. It was experierenced during the action.
AMP: happy, to be envied, and spiritually prosperous—with life-joy and satisfaction in God’s favor and salvation, regardless of their outward conditions
Dead Sea Scrolls community: Blessed is the one with a pure heart, who doesn’t not slander with his tongue. Blessed are those who adhere to the commands of the Torah and do not adhere to perverted paths. … blessed is the man who attains Wisdom, who walks in the Law of the Most High.
150 years before Jesus, a Jewish Teacher, Ben-Sirah Jesus wrote a blessed is statement. It fully immersed it’s self in the value of the world with status, admiration, etc. It was a culture where status was important and the one Jesus Christ has walked into. When they heard Jesus say, “blessed” they thought they knew what he was going to say, but he said almost the opposite.