Here is my summary of the argument:

The Masoretic text was compiled by Jewish scholars ceveral centuries after the death of Christ and the spread of Christianity - and has "like a lion", which makes no contextual sense.

The Septuagint text was compiled by Jewish scholars (not Christian, obviously) ceveral centuries before the death of Christ and has "they pierced" - which makes contextual sense.

The Hebrew vocalization differs by one stroke. Which version should you trust?

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-JD