With which your enemies have reproached, O LORD; with which they have reproached the footsteps of your anointed.
Read Chapter 89
Augustine of Hippo
40. "Wherewith Thine enemies have blasphemed Thee, O Lord" (ver. 51), both Jews and Pagans. "Wherewith they have blasphemed." Wherewith have they blasphemed Thee? "With the change of Thine Anointed." They objected that Christ died, and was crucified. Madmen, what is your reproach? Although there is now no one to use it: yet supposing some still remaining that so speak, what is your reproach? that Christ died? He was not destroyed, but changed. He is styled "dead" on account of the three days. Wherewith then have thine enemies blasphemed Thee? Not with the loss, not with the perdition of Thine Anointed, but with His "change." He was changed from temporal to eternal life: He was changed from the Jews to the Gentiles; He was changed from earth to heaven. Let then Thy vain enemies blaspheme Thee still for the change of Thine Anointed. Would that they may be changed: they will not in that case blaspheme the change of Christ, which displeases them since they themselves will not be changed. "...
Wherewith. Or "because "quod. (Haydock)
Change. Hebrew also, "the supplanting or retardment. "Why does not your Messias come? How are your kings fallen! though God had promised them an eternal kingdom! Boast no more of his power or veracity. This impious language disturbs me. (Calmet)
They deride the ignominious life of the Messias. (Eusebius)
Sedecias had "exchanged "the promised crown for irons, which was a cutting reproach. (Berthier)
Christ appeared to have left his people. (Worthington)
Infidels objected, that David's piety was ill requited by God, and that the anointed had made a bad exchange; antallagma, Matthew xvi. 26. (Menochius)