Rashi, on Ps 59:6

“Thou hast given a warning to them that fear thee: that they may flee from before the bow: That thy beloved may be delivered.”

“You have given those who fear You trials Trials of many troubles. to be tested With which to be tested whether they would stand [steadfast] in awe of You. in order to beautify forever To beautify Your standards in the world, so that when You give them goodness, the gentiles will not criticize You, but they will beautify Your judgments and say that He justly did good to them because they passed many tests for Him.”

Imported from an open dataset — not yet checked against the printed edition.