'Posterity' in the Bible

since the time that I commanded judges to be over My people Israel. And I will humble and subdue all your enemies.“Furthermore, I tell you that the Lord will build you a house (a blessed posterity).

For You, O my God, have revealed to Your servant that You will build for him a house (descendants); therefore Your servant has found courage to pray before You.

Therefore may it please You to bless the house (descendants) of Your servant, that it may continue before You forever; for what You bless, O Lord, is blessed forever.”