Psalms 132:11-12

11 a  The  Lord swore to David a sure oath
b  from which he will not turn back:
c  “One of the sons of your body
Hebrew  of your fruit of the womb

I will set on your throne.
12If your sons keep my covenant
and my testimonies that I shall teach them,
their sons also forever
shall e  sit on your throne.”
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