In Bereshit (Genesis) 12:2 HaShem tells Avraham that he should be a blessing: V'heyeh Bracha: וֶהְיֵה, בְּרָכָה
But what does it mean that someone is a blessing? Isn't all blessing from HaShem, the source of all blessing.
So i'm not asking how we can bless HaShem, I'm asking how one can be a blessing; aren't blessings (brachot?) coming from HaShem?