What Does “Posterity” Mean in the Bible?
Those who come after: children, grandchildren and all the descendants.
Where it appears in the Bible
Genesis 17:7; Genesis 22:17
What the Bible says
Genesis 17:7
And I will establish my covenant between me and thee, and between thy seed after thee in their generations, by a perpetual covenant: to be a God to thee, and to thy seed after thee.
Genesis 22:17
I will bless thee, and I will multiply thy seed as the stars of heaven, and as the sand that is by the sea shore: thy seed shall possess the gates of their enemies.
Douay-Rheims Bible (Challoner revision), public domain.
Source: Dictionary.com, “posterity”