OR me, the zenith of this chapter is verse 10. To Zechariah, God says, "They shall look upon Me whom they have pierced, and they shall mourn for Him..." This moment will come at the time when Jesus reveals Himself as King and Judge. It will happen at the end of the Tribulation, which will be the beginning of the last Millennium of human history. A chief event will be the battle of Armageddon. It will be a time of salvation in Israel (vs. 3, 6 & 8). It will be a time of terrible judgment against all of the enemies of Israel. But the Jews will weep as they are rescued.
The Jews originally rejected their Messiah. There were both Jews and Gentiles who participated in His crucifixion. It shouldn't be a surprise then that when the Jews corporately realize and accept that Jesus of Nazareth was and is the Son of God, they will be overcome with emotion concerning their own guilt; concerning the long span of time that they remained in unbelief; concerning the simple fact that they crucified their own Savior and King. Think of the day of atonement that was established in Moses' lifetime (Leviticus 16:29-34). Twice in that passage of Scripture, it is recorded that the Jews were expected to "afflict their souls." The comparison is obvious; however, they will not have to be commanded or required to weep when they see the nail-prints in their Savior's hands. The response will be natural.