What does Psalm 22:27 mean?

The Old Testament sometimes looks far ahead, beyond the coming of Christ, beyond the years after, and even past the end times. The words here foretell an eventual worldwide conversion to the Lord. At that time God's promise to Abraham to bless all the families of the earth in him (Genesis 12:1–3) will be entirely and wholly fulfilled. Zechariah 12:10 declares: "I will pour out on the house of David and the inhabitants of Jerusalem a spirit of grace and pleas for mercy, so that, when they look on me, on him whom they have pierced, they shall mourn for him, as one mourns for an only child, and weep bitterly over him, as one weeps over a firstborn."

Zechariah 13:1 predicts: "On that day there shall be a fountain opened for the house of David and the inhabitants of Jerusalem, to cleanse them from sin and uncleanness." Zechariah 13:9 foretells that the Lord will bring one third of the people of Israel through the fire—meaning the tribulation of the end times—and refine them. They will call on His name; God "will say, 'They are my people'; and they will say, 'The LORD is my God'" (Zechariah 13:9).

Zechariah 14:9 declares: "The LORD will be king over all the earth. On that day the LORD will be one and his name one." Verse 16 pictures nations going to Jerusalem annually "to worship the King, the LORD of hosts, and to keep the Feast of Booths" (Zechariah 14:16).