looked on - with malignant pleasure, and a brutal stare. So the antitypes, Messiah’s foes (Psa 22:17). Maurer translates, as the Margin, “thou shouldest not look” any more. English Version agrees with the context better.
the day of thy brother - his day of calamity.
became a stranger - that is, was banished as an alien from his own land. God sends heavy calamities on those who rejoice in the calamities of their enemies (Pro 17:5; Pro 24:17, Pro 24:18). Contrast the opposite conduct of David and of the divine Son of David in a like case (Psa 35:13-15).
spoken proudly - literally, “made great the mouth”; proudly insulting the fallen (Eze 35:13, Margin; compare 1Sa 2:8; Rev 13:6).