John Trapp on Psalms 132:11

Verſ. 11. The Lord hath ſworn in truth] The Eternity of Iſrael cannot lye, 1 Sam. 15.29. yet tendring our infirmity, he ſweareth and ſealeth to us.

Of the fruit of thy body] David was excellent at making the utmoſt of a Promiſe, at preſſing, and oppreſſing it, till he had expreſt the ſweetneſs out of it, Iſa. 66.11. See how hee improveth Gods Promiſe, and worketh upon it, 1 Chron. 17.23, 24, 25, 26. Solomon had learned to do the like.