B-Hebrew: The Biblical Hebrew Forum

While the MT has “And he went up” (ויעל), the DSS has ויעלו. Since the DSS of Isaiah 53:2 has a yud as a vav, doesn't that render it as “And THEY went up"?

I'm presuming you're referring to the Great Isaiah Scroll (there's three DSS manuscripts which have text from Isaiah 53:2 (1QIsa^a, 1QIsa^b, 4QIsa^a), and only 1QIsa^a (Great Isaiah Scroll) has the beginning of the verse extant)?

Checking the manuscript, I can see there's what appears to be some sort of faded ו after ויעל (see here), however based on the colour of the letters both before and after, evidently this letter has been erased by either the initial copyist or a corrector. Nevertheless yes, the original reading would say "And they grew up", but the correction (correctly, IMHO) removes this, and restores it as "And he grew up".

Thanks again Mr. Walch. That I think about explains it.