The Aaronic blessing promises the “face” and “countenance” of Yahweh, and places the name of God on the people of God (Numbers 6:27).
Psalm 44 explains these words of blessing. Yahweh’s hand drove out nations and planted Israel in the land (v. 2) because He shone the “light of [His] countenance” on them and was “gracious” to them (v. 4). Israel did not win by her own strength but bythe “name” of Yahweh drop down enemies.
To be sent out in benediction is to be sent out to battle and victory, armed with the name of Yahweh.