to bless: to invoke or hand on God's favor and life-giving power for someone, and (of people toward God) to honor him as its source
At its heart this word names a flow of favor and well-being that always runs back to God as its source. When God is the one who blesses, he actually grants the things that make life flourish: children, food, land, protection, and his own presence. When a person blesses another, the word means they call that favor down on someone, entrusting them to God, most solemnly when a father hands his inheritance-blessing to his heir or a leader sends a people on their way. And when people bless God, they turn the same word back toward him in praise, owning him as the giver of every good thing.
These uses are one word, not several, because they all move along that single line of favor between God and people, only in different directions. The word's force shifts with the direction:
- a real bestowal of good when God speaks it downward
- an invoking of good when a person speaks it over another
- a grateful acknowledgment when it is aimed up at God
Even the everyday use for greeting or taking leave of someone is a courteous edge of the same idea, a small wish of well-being. The older notion that the word transferred a stored-up soul-power, like a substance that could be used up or passed on, is now generally set aside; the blessing works because God stands behind the words, not because the words carry a force of their own.
Two uses deserve a flag for the careful reader. The worn-down greeting sense can shade into simple politeness, so context decides whether a real blessing is meant or just a friendly salute. And in a small, famous group of verses the word plainly means its opposite, to "curse," used as a deliberately reverent stand-in for a word (ארר) too offensive to put on the page when the object is God or the king.