¹⁰ “I will pour out on the house of David and on the inhabitants of Jerusalem, the Spirit of grace and of supplication, so that they will look on Me whom they have pierced; and they will mourn for Him, as one mourns for an only son, and they will weep bitterly over Him like the bitter weeping over a firstborn.

¹¹ In that day there will be great mourning in Jerusalem, like the mourning of Hadadrimmon in the plain of Megiddo. ¹² The land will mourn, every family by itself; the family of the house of David by itself and their wives by themselves; the family of the house of Nathan by itself and their wives by themselves; ¹³ the family of the house of Levi by itself and their wives by themselves; the family of the Shimeites by itself and their wives by themselves; ¹⁴ all the families that remain, every family by itself and their wives by themselves.

Zech 12:10-14 (NASB)

Supplication and Grace

The day is coming when all who are in Jerusalem and the house of David (I presume this represents all Israel) will recognize Jesus as the Messiah and call out in supplication to Him for mercy and forgiveness. Supplication is “the action of asking or begging for something earnestly or humbly” (Oxford languages dictionary).

• But it starts with grace. God pours out grace. Before any kind of turning to God or transformation can occur, God must give grace. The Jews up to this point in Zechariah’s timeline have rejected the Messiah to today.  God now says, “It’s time.” It’s time to redeem His people. 
• What’s the result of this outpouring of grace? “This shall produce deep and sincere repentance; they shall mourn, and be in bitterness of soul, to think that they had crucified the Lord of life and glory, and so long continued to contradict and blaspheme, since that time.” (Clarke’s commentary) 
• This should be the response of all mankind that want to be saved. “Men first look upon him whom they have pierced, and then, but not till then, they mourn for their sin.” (C. S. Spurgeon) (John 12:32)

Jesus is God

It is quite evident from this passage that Jesus is God. Enduringword.com says it well: “Comparing Zechariah 12:10 with Zechariah 12:1 and 12:3 (Thus says the LORD… says the LORD) makes it clear that the Me they look upon is the LORD God – Yahweh – Himself. This is astounding and wonderful evidence that Jesus the pierced One is God, and that Yahweh is the Triune God. Simply said, the Father sends the Spirit so that men would look upon the Son.” Add to this Psalm 22:16 which also refers to His being “pierced.” Finally, we see this carried out at Jesus’ crucifixion – see John 19:37.