George Haydock's Catholic Commentary
Psalms 88:38
Witness. Which may refer to the throne, or to the sun, (Calmet) or to the rainbow. (Berthier) (Du Hamel) --- As long as the stars subsist, so long shall his throne be established. (Calmet) --- The Church shines like the sun, and is easily known. (Berthier) --- God, (Eusebius) or Christ, attests the promises. (St. Jerome) (Isaias lv. 4., and Apocalypse i. 5.) --- The rainbow was assigned as a memorial, that the world should no more be drowned, Genesis ix. The other covenants made God have no less stability. (Haydock) --- Christian souls may shine in virtue, like the sun, or full moon, (Worthington) particularly (Haydock) after the resurrection, when they will be perfect, and not liable to change. (St. Augustine)