Rashi and ancient rabbinic Midrash confirm Psalm 22 was understood as messianic

Mike cites Rashi (a major medieval Jewish scholar) who says Psalm 22:27 ('all the ends of the earth shall remember and turn to the Lord, and all the families of the nations shall worship before you') is about the Messiah. He also cites an 8th-century rabbinic Midrash that interprets David's words in Psalm 22 as being spoken because of 'the ordeal of the son of David,' using the phrase 'son of David' — a messianic title. Mike further notes that Psalm 22:27 is itself one of the messianic criteria Ra listed (universal worship of God), creating an internal inconsistency in Ra's argument.