The answer is found at Zechariah 12:10 where the Lord Himself is speaking. "And 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 upon 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 first-born."
The Lord in this verse identifies Himself as the one being pierced and slain. This has caused MUCH debate among Jewish scholars over the centuries even to the point of some changing the modern translations of the scriptures to obscure this fact. But that the issue itself was debated so long ago siting this scripture as written above is evidence that the scriptures as we have them are correct and there is valid reason to infer that YHWH himself is the one to be pierced.
Now, my question is for Biblical Unitarians who deny the deity of Jesus Christ. On what basis doWhat reason or reasons can you denyoffer that dispute the wordsplain meaning of Zechariah 12:10 do not mean what they say?