It has been suggested that the deity of Christ can not be supported with Old Testament scripture.
In Zechariah 12 God is talking:
“And I will pour on the house of David and on the inhabitants of Jerusalem the Spirit of grace and supplication; then they will look on Me whom they pierced. Yes, they will mourn for Him as one mourns for his only son, and grieve for Him as one grieves for a firstborn."
The apostle John makes direct reference to this scripture in his account of the crucifixion, clearly indicating that the Lord Jesus is the one who was pierced: "For these things were done that the Scripture should be fulfilled, “Not one of His bones shall be broken." 37And again another Scripture says, “They shall look on Him whom they pierced."
So God is the one whom was pierced and Jesus was the one whom was pierced.
I find the reference to mourning for the only son in realisation interesting in the light of this.